Questions and Answers
What is the slope-intercept form of an equation of a line?
y=mx+b
What kind of line has a slope of zero?
horizontal
What kinds of lines in a system of equations have infinitely many solutions?
2 same lines
What form of an equation of a line is Ax+By=C?
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What kinds of lines in a system of equations have no solution?
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What is the solution to 2 intersecting lines in a system of equations?
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What is the equation x=-b/2a?
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The equation y=6 is what kind of line?
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What is the formula for finding the slope between 2 points?
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What are the 3 kinds of solutions a system of equations can have?
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What method do you use to factor a trinomial?
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What are the 3 kinds of solutions a quadratic equation can have?
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The equation of a horizontal line is...
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In y=mx+b, which variable is the slope?
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What is the slope when your answer is 2/0?
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In y=mx+b, which variable is the y-intercept?
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What is the standard form of an equation of a line?
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What is the equation for the axis of symmetry?
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What form of an equation of a line is y=mx+b?
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What must the discriminant be for a polynomial to be factored?
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What is the expression b^2-4ac?
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What is the slope of a horizontal line?
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What kind of line has an undefined slope?
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What is the slope when your answer is 0/4?
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What do you need to write an equation in point-slope form?
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What is m in y=mx+b?
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What is the quadratic formula?
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If the discriminant is negative, how many solutions does the quadratic equation have?
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What is x^2*x^2?
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The equation of a vertical line is...
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What form of an equation of a line is y-y=m(x-x)?
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What is the solution to parallel lines in a system of equations?
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What does the solution to a system of equations look like?
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What are 3 ways to solve a system of equations?
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The discriminant is...
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The slopes of perpendicular lines are...
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What do you need to write an equation in slope-intercept form?
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What is b in y=mx+b?
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What is x^2+x^2?
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If the discriminant is positive, how many solutions does the quadratic equation have?
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The equation x=-4 is what kind of line?
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What does the answer look like when you factor a trinomial?
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What can you use to find the slope between two points on a graph?
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What are 4 ways to solve a quadratic equation?
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What is the slope of a vertical line?
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The slopes of parallel lines are...
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Study Notes
Slope and Equation Forms
- Slope-intercept form is expressed as y = mx + b where m is the slope and b is the y-intercept.
- The standard form of an equation of a line is Ax + By = C.
- The point-slope form is represented as y - y1 = m(x - x1).
Types of Lines
- A horizontal line has a slope of zero and can be represented as y = a number.
- A vertical line has an undefined slope and can be represented as x = a number.
Solutions in Systems of Equations
- Two identical (same) lines yield infinitely many solutions.
- Parallel lines have no solution as they never intersect.
- The solution for intersecting lines is the ordered pair where they meet.
Quadratic Equations
- The quadratic formula is x = -b ± √(b² - 4ac) / 2a.
- The discriminant (b² - 4ac) determines the nature of solutions in a quadratic equation:
- Positive: Two real solutions.
- Zero: One real solution.
- Negative: No real solutions.
Slope Basics
- The formula for finding slope between two points is (y₂ - y₁) / (x₂ - x₁), also known as rise over run.
- The slopes of perpendicular lines are negative reciprocals of each other.
- A slope of 2/0 is undefined, while a slope of 0/4 is zero.
Factoring and Solutions
- To factor a trinomial, use the grouping method, resulting in 2 binomials in parentheses.
- Common methods for solving systems of equations include graphing, elimination, and substitution.
Important Variables
- In the equation y = mx + b:
- m denotes the slope.
- b denotes the y-intercept.
Miscellaneous Facts
- A line with an equation y = 6 is horizontally aligned.
- The axis of symmetry for quadratic equations is given by x = -b / 2a.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your understanding of algebraic concepts with these flashcards focused on slope-intercept form, types of lines, and equations of lines. This quiz is ideal for beginners and those looking to reinforce their algebra skills. Get ready to sharpen your knowledge in foundational algebra!
