8th Grade Math Mixed Review

Which equation is directly proportional?

• y=5x+1
• y=4x-3
• y=7x
• y=2x+7

Tags

CCSS.8.F.A.3

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

• 9
• 6
• 1.2
• 5

Tags

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.5

<sub>Quadrilateral ABCD was dilated with the origin as the center of dilation to create quadrilateral A'B'C'D'.

Which rule best represents the dilation that was applied to quadrilateral ABCD to create quadrilateral A'B'C'D'?</sub>

• (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)

Tags

CCSS.HSG.CO.A.2

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

• 13.27
• 7
• 3.2
• 1.62

Tags

CCSS.8.G.B.8

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

• X-values
• Y-values
• Positive Numbers
• Negative Numbers

Tags

CCSS.8.F.A.1

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

• 5
• -4
• -5
• 4

Tags

CCSS.8.F.A.3

CCSS.8.EE.B.6

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

• solution of a system
• elimination method
• system of equations
• table

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Tell whether the two figures are 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

Tags

CCSS.HSG.SRT.A.2

What is 5/8 as a decimal? 

• 0.375
• 0.625
• 0.5
• 0.875

Tags

CCSS.8.NS.A.1

Which rule would result in a clockwise rotation of 90° about the origin?

• (x, y) → (y, x)
• (x, y) → (4x, 4y)
• (x, y) → (x, -y)
• (x, y) → (x + 4, y + 4)

Tags

CCSS.6.NS.C.6B