Math 8 Final Review

There are 3.4 x 10⁹ dust particles in 1 cubic metre. How many dust particles are there in 1200 cubic metres?

• 4.08 x 10¹²

• 4.08 x 10¹¹

• 4.08 x 10¹⁰

• 4.08 x 10⁹

Tags

CCSS.8.EE.A.4

Solve:
2(a + 4) = 2a - 8 + 4a

• 3
• -3
• -4
• 4

Tags

CCSS.8.EE.C.7B

Which set of values is a function?

• (9,5) (10,5) (9,-5) (10,-5)

• (3,4) (4,-3) (7,4) (3, 8)

• (6,-5) (7, -5) (8, 1) (9, 1)

• (2, -2) (5, 9) (5, -7) (1, 4)

Tags

CCSS.8.F.A.1

Three squares are joined at their vertices to form a right triangle. Find x, the side length of the square marked in the diagram.

• 18 cm

• 20 cm

• 22 cm

• 400 cm

Tags

CCSS.8.G.B.8

Which scatter plot shows both a positive association and nonlinear association between the two variables?

• 
• 
• 
• 

Tags

CCSS.HSS.ID.B.5

Herkimer is painting a square table top with an area of 96 square feet. Which point below best represents the side length of one side of the table top?

• A

• B

• C

• D

Tags

CCSS.8.EE.A.2

Gidget built a triangular window frame with side lengths that measure 13 inches, 16 inches and 29 inches. Is the window frame that Gidget created a right triangle?

• Yes, the sum of the squares of the smaller sides equals the square of the longest side

• No, the sum of the squares of the two shorter sides does not equal the square of the longest side.

• Yes; the sum of the two shorter sides equals the length of the longest side.

• No, it does not make a triangle.

Tags

CCSS.8.G.B.8

Solve the system of equations via substitution.

y = 2x - 7

3x + y = 13

• (5, 2)

• (4, 1)

• (4, 2)

• (5, 1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

A certain transformation on the coordinate plane can be represented with the following algebraic representation which shows the effect it will have on each ordered pair:

(x, y) ---> (x - 2, y - 2)

Which describes the transformation?

• Dilation with a scale factor of -2

• A translation 2 units right and 2 units up

• A translation 2 units left and 2 units down

• A reflection over x = 4

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

The two-way table shows whether the 100 people surveyed like pancakes or waffles. Of the left-handed people, find the relative frequency of those who like waffles to the nearest percent.

• 15%

• 35%

• 50%

• 30%

Tags

CCSS.8.SP.A.4