Podcast
Questions and Answers
What is the profit when 275 power bars are sold?
What is the profit when 275 power bars are sold?
- $180 (correct)
- $120
- $150
- $200
If the setup cost for the fundraiser is $40, what is the profit from selling 50 power bars?
If the setup cost for the fundraiser is $40, what is the profit from selling 50 power bars?
- $20
- $10 (correct)
- $30
- $40
How much fuel has been emptied from the tank after 10 minutes at a rate of -4 m³/min?
How much fuel has been emptied from the tank after 10 minutes at a rate of -4 m³/min?
- 40 m³ (correct)
- 50 m³
- 60 m³
- 30 m³
At what altitude is the air pressure approximately 90 kPa?
At what altitude is the air pressure approximately 90 kPa?
What is the stopping distance for a vehicle traveling at 80 km/h according to the table?
What is the stopping distance for a vehicle traveling at 80 km/h according to the table?
What is the area covered by 6 liters of paint?
What is the area covered by 6 liters of paint?
How long did the electrician work if the job cost $240?
How long did the electrician work if the job cost $240?
What height was the candle prior to being lit?
What height was the candle prior to being lit?
At what age is the recommended maximum heart rate 120 beats/min?
At what age is the recommended maximum heart rate 120 beats/min?
What was the initial distance of Eric from home when he started his ride?
What was the initial distance of Eric from home when he started his ride?
How far was Jada from the Grey Mountains at the start of her trip?
How far was Jada from the Grey Mountains at the start of her trip?
What is the rate at which the candle burns?
What is the rate at which the candle burns?
If a cab ride covers a distance of 10 kilometers, which of the following would likely be the cost?
If a cab ride covers a distance of 10 kilometers, which of the following would likely be the cost?
Flashcards
Vertical Intercept
Vertical Intercept
The point on a graph where the line crosses the y-axis.
Rate of Change
Rate of Change
The rate at which the y-value changes in relation to the x-value. It can be positive, negative, or zero.
Linear Relationship
Linear Relationship
A relationship between two variables where the rate of change is constant. This means the change in y is always proportional to the change in x.
Tank Capacity
Tank Capacity
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Fuel Fill/Empty Time
Fuel Fill/Empty Time
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Interpolation
Interpolation
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Extrapolation
Extrapolation
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Direct Relationship
Direct Relationship
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Partial Relationship
Partial Relationship
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Y-intercept
Y-intercept
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Slope
Slope
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Interpreting a Graph
Interpreting a Graph
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Zero Time
Zero Time
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Study Notes
Linear Relations
- Graphs can represent linear relationships, where variables change at a constant rate.
- Interpolating data points involves finding values within a given data set.
- Extrapolating data points involves finding values outside a given data set.
Data Interpretation
- Linear relationships can be characterized as direct or partial.
- Direct relationships pass through the origin (0,0).
- Partial relationships do not pass through the origin.
- Graphs can show the relationship in terms of area, volume, cost, distance, etc.
Problems and Examples
- Sample problems include determining cost of a house call from an electrician, distance travelled by a cyclist, height of a candle over time.
- Key concepts include identifying variables like cost, distance, time etc.
- Using specific values from a graph to solve for unknown variables.
- Finding rates of change, intercepts (y-intercept).
- Understanding the real-world phenomena presented.
Formulas and Concepts
- Identifying the relationship between quantities.
- Using the slope and y-intercept to define a linear relation.
- Graphing to understand the relation and then extrapolating or interpolating.
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Description
This quiz explores linear relationships and how they can be represented through graphs. It covers concepts such as interpolation, extrapolation, and the characteristics of direct and partial relationships. You'll also solve practical problems and apply formulas to understand real-world phenomena.
