8th Grade Math Mixed Review

Front

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

Back

y=7x

Front

Determine the mean absolute deviation of the data: 9, 7, 11, 10, and 8

Back

1.2

Front

Which rule best represents the dilation applied to quadrilateral ABCD to create quadrilateral A'B'C'D'? Options: (x,y) becomes (0.4x, 0.4y), (x,y) becomes (x+3, y+1.5), (x,y) becomes (2.5x, 2.5y), (x,y) becomes (x-1.5, y+3)

Back

(x,y) becomes (2.5x, 2.5y)

Front

What is the side of a right triangle when C=15 and B=7?

Back

13.27

Front

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

Back

X-values

Front

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

Back

-4

Front

A ________________ is a set of two or more equations that have the same variables.

Back

system of equations

Front

Are the two figures similar?

Back

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

Front

What is 5/8 as a decimal?

Back

0.625

Front

Which rule results in a clockwise rotation of 90° about the origin? Options: (x, y) → (y, x), (x, y) → (4x, 4y), (x, y) → (x, -y), (x, y) → (x + 4, y + 4)

Back

(x, y) → (y, x)