8th Grade Math Mixed Review

Front

What is the y-intercept (b) in the linear function y = 5x - 4?

Back

-4

Front

Which equation is directly proportional? y=5x+1, y=4x-3, y=7x, y=2x+7

Back

y=7x

Front

For a table to be considered a function, ______ cannot repeat.

Back

X-values

Front

When you translate (x-4,y), it will move _____

Back

4 units left

Front

Are the two figures similar? Explain your reasoning: Yes, similar because they are the same shape and side lengths are proportional. No, not similar because they are the same shape, but side lengths are not proportional. Yes, same shape, No, different sizes.

Back

No, not similar because they are the same shape, but side lengths are not proportional.

Front

What is the definition of a linear function?

Back

A function that graphs to a straight line, represented by the equation y = mx + b.

Front

What does the slope (m) represent in a linear equation?

Back

The rate of change of y with respect to x.

Front

What is the formula for calculating the slope between two points (x1, y1) and (x2, y2)?

Back

m = (y2 - y1) / (x2 - x1)