Functions in Mathematics

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Questions and Answers

Which of the following relations represents a function?

  • {(1, 2), (3, 4), (5, 6), (1, 7)}
  • {(-3, 1), (5, 2), (3, 5), (7, 6)}
  • {(2, 5), (4, 6), (7, 5), (3, 9)}
  • None of the above (correct)

Given the function $f(x) = 2x^2 - 3x + 1$, evaluate $f(0)$.

1

For the function $g(x) = \sqrt{x-3}$, what is the implied domain?

$x \geq 3$

Which test is used to determine whether a graph represents a function?

<p>Vertical line test (B)</p> Signup and view all the answers

If $f(x) = 2x + 3$ and $g(x) = x^2 - 4$, find the value(s) of $x$ where $f(x) = g(x)$.

<p>-1, 7</p> Signup and view all the answers

Given $f(x) = x^2 - 5x + 2$ and $g(x) = 3x - 4$, find $(f \circ g)(2)$.

<p>-4</p> Signup and view all the answers

The function $f(x) = ax^2 + bx + c$ has roots (zeros) at $x = 2$ and $x = -3$. If $f(1) = 4$, it is possible to uniquely determine the values of a, b, and c.

<p>True (A)</p> Signup and view all the answers

What is the domain of $f(x) = \frac{x-1}{x^2 - 4}$?

<p>All real numbers except $x = 2$ and $x = -2$ (D)</p> Signup and view all the answers

Determine the domain of the function $g(x) = \sqrt{x^2 - 9}$. Express your answer in interval notation.

<p>$( -\infty, -3] \cup [3, \infty)$</p> Signup and view all the answers

Match each function transformation with its corresponding effect on the graph of $f(x)$.

<p>f(x) + c = Vertical shift up by c units f(x) - c = Vertical shift down by c units f(x + c) = Horizontal shift left by c units f(x - c) = Horizontal shift right by c units</p> Signup and view all the answers

A shift in the graph of a function $f(x)$ to the left by $c$ units is represented by the transformation $f(x + ______)$.

<p>c</p> Signup and view all the answers

Which of the following is a key point to identify when sketching the graph of a quadratic function?

<p>Both A and B (B)</p> Signup and view all the answers

Mapping diagrams are a suitable method for visualizing functions which takes discrete inputs.

<p>True (A)</p> Signup and view all the answers

Which of the following topics should be included in a test review focused on functions and transformations?

<p>All of the above (D)</p> Signup and view all the answers

Name three categories into which tone and mood words can be grouped.

<p>Positive, negative, neutral</p> Signup and view all the answers

When analyzing a poem, ______ helps to pinpoint the specific feelings the poem conveys.

<p>Tone</p> Signup and view all the answers

Which of the following should be included in the first reading when analyzing a poem?

<p>Annotating initial impressions (A)</p> Signup and view all the answers

Imagery refers only to visual descriptions in a poem.

<p>False (B)</p> Signup and view all the answers

A well-structured analytical paragraph should include which of the following?

<p>Point, evidence, explanation, link (D)</p> Signup and view all the answers

List three items covered by the multiple-choice questions in the biology section.

<p>Light-dependent reactions, Calvin cycle, Factors affecting photosynthesis rate</p> Signup and view all the answers

What should be labeled on a diagram of a chloroplast?

<p>Major structures</p> Signup and view all the answers

The rate of photosynthesis is unaffected by temperature.

<p>False (B)</p> Signup and view all the answers

In a photosynthesis flowchart, what should be indicated?

<p>All of the above (D)</p> Signup and view all the answers

Studying key terms related to environmental protection and sustainability is part of ______ building.

<p>Vocabulary</p> Signup and view all the answers

What framework is reviewed for source analysis in Humanities?

<p>OPVL (A)</p> Signup and view all the answers

Flashcards

What is a function?

A relation where each input has only one output.

What is the domain of a function?

The set of all possible input values (x-values) for a function.

What is the range of a function?

The set of all possible output values (y-values) of a function.

What is the vertical line test?

A visual test to determine if a graph represents a function. A function will only intersect the line once.

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What is a composite function?

Finding a new function by applying on function to the results of another. Notation: (f ∘ g)(x) or f(g(x)).

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What are x-intercepts?

A point where the graph intersects the x-axis (y=0).

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What are y-intercepts?

A point where the graph intersects the y-axis (x=0).

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What is a vertex?

A point where a quadratic function reaches its maximum or minimum value.

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What is an asymptote?

A line that a curve approaches arbitrarily closely.

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What is a mapping diagram?

Illustrates how elements from one set are mapped(linked) to elements in another set.

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What are light-dependent reactions?

Reactions that convert light energy into chemical energy, splitting water and generating oxygen, ATP, and NADPH.

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What is the Calvin Cycle?

Reactions that use ATP and NADPH to convert carbon dioxide into glucose.

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What is a chloroplast?

Organelle containing chlorophyll where photosynthesis takes place.

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What is OPVL?

Includes: Origin, Purpose, Value, and Limitations; framework to analyze source documents.

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Annotate. What to annotate?

Initial impression, unfamiliar words circled, phrases underlined, and questions noted.

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What is imagery?

Expressive literary device relating to the senses.

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What is diction?

The specific and careful word choice used by an author.

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What are sound devices?

Techniques such as alliteration, assonance, and consonance.

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Study Notes

Mathematics: Functions Fundamentals

  • Relations need to be determined as functions in multiple-choice questions
  • Find f(2), f(-1), f(0), and f(1/2) for the function f(x) = 2x² - 3x + 1
  • Identify the domain and range for g(x) = √(x-3), h(x) = 5/x, and k(x) = |2x+4| - 3
  • Determine which graph passes the vertical line test, given four graphs with various relations
  • Find the value of x where f(x) = g(x), with f(x) = 2x + 3 and g(x) = x² - 4
  • Find (f ∘ g)(2), (g ∘ f)(1), and (f ∘ f)(-1) for f(x) = x² - 5x + 2 and g(x) = 3x - 4
  • Given f(x) = ax² + bx + c has zeros at x = 2 and x = -3, and if f(1) = 4, find the values of a, b, and c, then write the function in standard form
  • Identify the domain of f(x) = (x-1)/(x² - 4) and g(x) = √(x² - 9)
  • Find all values of x where h(x) = |x - 2| + 3 = 5
  • Sketch graphs of f(x) = x² - 6x + 8, g(x) = |x + 2| - 3, and h(x) = 1/(x-1), showing intercepts and vertices
  • On a graph, identify/label the domain, range, x-intercepts, y-intercepts, and locations of any asymptotes
  • Draw a mapping diagram for f(x) = 2x - 3 with the domain {-2, -1, 0, 1, 2}
  • Create a sketch of f(x) = x³ and identify key features

Mathematics: Test Review

  • Focus review on questions pertaining to functions and transformations
  • Focus on identifying common errors
  • Identify areas where points were lost
  • Rework 3-5 struggled-with problems from scratch
  • Compare new solutions with original answers to those problems
  • Note any improvements in understanding
  • Summarize key lessons learned from past errors

English: Focus on Poetry Analysis Fundamentals

  • Study the list of tone and mood words
  • Create flashcards for 20 unfamiliar words from the prepared list.
  • Group words into categories like positive, negative, and neutral
  • Practice identifying tone in short excerpts using precise vocabulary and explaining which words/phrases create that tone
  • Complete a tone-mapping exercise, listing 5 specific tone words for 3 emotions (joy, grief, anger) and providing a sample phrase that would exemplify each tone
  • Read Vernon Scannell's poem "Nettles," annotating for initial impressions.
  • Circle unfamiliar words, underline phrases with strong imagery or emotions, and note questions/observations
  • Analyze literary techniques, identifying 3-5 examples each of imagery (visual, tactile, etc.), diction (word choice), and sound devices (alliteration, assonance, etc.)
  • Explain the effect that they create in the poem
  • Determine the poem's theme and purpose, considering the universal human experience and the poet's intent, and analyze how the techniques support that purpose
  • Connect the poem to the assigned area of focus
  • Analyze how the poem relates to art/creativity, science/environment, or beliefs/values
  • Practice writing an effective introduction for an analysis of "Nettles," including a hook, title/author, directional statement, and thesis
  • Practice writing a PEEL paragraph about imagery, including point (topic sentence), evidence (quote), explanation (analysis), and link (to theme/purpose)
  • Self-assess the writing against English assessment criteria and pinpoint one strength and one area to improve upon

Biology: Photosynthesis

  • Answer 15 multiple-choice questions covering light-dependent reactions, the Calvin cycle, photosynthesis factors, the chloroplast, and cellular respiration
  • Self-check answers using the provided key
  • Complete a detailed diagram of a chloroplast, labeling all major structures and indicating where reactions take place
  • Complete a flowchart of the photosynthesis process, filling in missing reactants, products, processes, and indicating energy transfers
  • Sketch/label a graph showing the effect of light intensity, CO2 concentration, and temperature on the photosynthesis rate
  • Explain the role of water in photosynthesis
  • Describe how ATP is generated during light-dependent reactions
  • Compare and contrast C3 and C4 photosynthesis
  • Explain why photosynthesis is important for all living organisms
  • Describe the adaptations of leaves for maximizing photosynthesis

Spanish: Environmental Vocabulary

  • Learn 20 key terms related to environmental protection and sustainability
  • Create flashcards with Spanish terms and English meanings
  • Practice pronunciation of each term
  • Read a passage about environmental initiatives in a Spanish-speaking country
  • Answer comprehension questions about the content and identify new vocabulary
  • Write 5-8 sentences about environmental issues in the community using at least 10 vocabulary terms and focusing on correct verb conjugation and sentence structure

Arabic: Reading Comprehension

  • Review 15 vocabulary words related to current topics and practice using each in a sentence
  • Read a one-page text on a contemporary issue
  • Annotate unfamiliar words to look up meanings and identify main ideas/supporting details
  • Answer 5-7 questions with complete sentences and correct grammar/structure

Humanities: Source Analysis Techniques

  • Review the OPVL (Origin, Purpose, Value, Limitation) framework
  • Study examples of effective source analysis
  • Analyze a primary source document (historical letter, speech, image), applying the OPVL framework, and identifying potential biases and contextual factors
  • Write a short paragraph analyzing the source's reliability
  • Explain how the source could be used in a historical investigation
  • Consider what additional sources would complement this one

Daily Review and Reflection

  • Summarize what was learned in each subject
  • Identify particularly challenging concepts
  • Note questions to ask teachers
  • Prepare study materials for the next session

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