SBABC practice
Flashcard
•
Mathematics
•
8th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the slope of a line in a graph?
Back
The slope of a line represents the rate of change of the dependent variable with respect to the independent variable. It is calculated as the rise over run between two points on the line.
2.
FLASHCARD QUESTION
Front
How can you find the walking speed of a person from a graph?
Back
You can find the walking speed by determining the slope of the line on the graph, which indicates the speed at which the person is walking.
3.
FLASHCARD QUESTION
Front
What is the y-intercept of a line?
Back
The y-intercept is the point where the line crosses the y-axis. It represents the value of the dependent variable when the independent variable is zero.
4.
FLASHCARD QUESTION
Front
What is the formula to calculate the cost of producing items?
Back
The cost can often be calculated using a linear equation of the form y = mx + b, where m is the variable cost per item, x is the number of items, and b is the fixed cost.
5.
FLASHCARD QUESTION
Front
If the cost to produce x game consoles is given by the equation y = 20x + 500, what does 20 represent?
Back
In this equation, 20 represents the variable cost in dollars to produce each game console.
6.
FLASHCARD QUESTION
Front
What happens to the area of a shape when it is enlarged by a scale factor of k?
Back
The area of the shape is multiplied by k^2. For example, if k = 1.5, the area is multiplied by 1.5^2 = 2.25.
7.
FLASHCARD QUESTION
Front
What is a scale factor in geometry?
Back
A scale factor is a number that scales, or multiplies, some quantity. It is used to enlarge or reduce shapes.
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