TCAP Math Practice —Grade 8

Based on the diagram, select all statements that must be true.

• ∠XAZ measures 50°.

• ∠XAW measures 50°.

• ∠WAU and ∠XAY are vertical angles.

• ∠ZAX and ∠YAU are complementary angles.

• ∠WAZ and ∠ZAU are supplementary angles.

Tags

CCSS.7.G.B.5

On the coordinate plane shown, which of the following sets of five points represent a linear function?

• (1,2), (2,3), (3,4), (4,5), (5,6)

• (1,2), (2,2), (3,3), (4,4), (5,5)

• (1,2), (1,3), (2,4), (3,5), (4,6)

• (1,1), (2,2), (3,3), (4,4), (5,5)

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

A baby weighs 7 pounds at birth. The table shows the baby’s weight after each month of its birth, up to the sixth month.

Write an equation in the form of y = mx + b that can be used to show a linear relationship among the data.

• y = mx + b

• y= x+7

• y = -x+7

• y=7x

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

The system of linear equations shown is graphed on the coordinate plane. What is the approximate solution for the system of linear equations?

• (1, -3)

• (-3, 1.3)

• (1.3, -3)

• (-3, 1)

Tags

CCSS.8.EE.C.8B

• 32

Tags

CCSS.8.EE.A.1

What value of coefficient b makes the equation true for any real number x? -3(2x - 3) + 5x = bx + 9

• 11

• 7

• -1

• -6

Tags

CCSS.8.EE.C.7B

A triangle has vertices R(1, 2), S(3, 3), and T(−3, 4). The triangle will be reflected over the x-axis. What are the coordinates of the vertices of triangle R'S'T', the image of triangle RST?

• R'(1, -2), S'(3, -3), T'(−3, -4)

• R'(1, 2), S'(3, 3), T'(−3, 4)

• R'(−1, 2), S'(−3, 3), T'(3, 4)

• R'(1, -2), S'(3, 3), T'(−3, 4)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Toby has created a map of his neighborhood. When he drew the map he noticed his house, his friend’s house, and the playground formed a right triangle. Which expression represents the distance, in inches, between Toby’s friend’s house and the playground?

Tags

CCSS.8.G.B.8

The value of an irrational number expression is estimated to be between 18 and 19. Which could be the expression?

Tags

CCSS.8.NS.A.2

• b = 18/32

• b = 9/16

• b = 6/8

• b = 72/128

Tags

CCSS.8.EE.A.2