EXTRA CREDIT for unit 3 QUIZ

The slope of line CA is  $-\frac{3}{2}$  . Which of the following is true about the slope of line XZ?

• The slope of line XZ is the negative reciprocal of the slope of line CA because the triangles are flipped.

• The slope of line XZ is one-half the slope of line CA because the ratio of corresponding sides between the triangles is  $\frac{1}{2}$  .

• The slope of line XZ is the same as the slope of line CA because the ratios of the corresponding sides of the triangles are equivalent.

• The is no relationship between the slope of line XZ and the slope of line CA.

Tags

CCSS.8.EE.B.6

Which proportion could be used to show the slope of line VX is equal to the slope of line XZ?

• $\frac{1-\left(-5\right)}{1-\left(-2\right)}=\frac{1-3}{1-\left(-5\right)}$

• $\frac{1-\left(-5\right)}{1-\left(-2\right)}=\frac{5-1}{3-1}$

• $\frac{-2-\left(-5\right)}{-2-1}=\frac{5-1}{3-1}$

• $\frac{1-\left(-2\right)}{1-\left(-5\right)}=\frac{3-1}{5-1}$

Tags

CCSS.8.EE.B.6

Triangle DEF and triangle GHI are similar triangles. Based on this information, which statement is true?

• The relationship between the slope of the hypotenuse of triangle DEF and the slope of the hupotenuse of triangle GHI cannot be determined.

• The slope of the hypotenuse of triangle DEF is greater than the slope of the hypotenuse of triangle GHI.

• The slope of the hypotenuse of triangle DEF is less than the slope of the hypotenuse of triangle GHI.

• The slope of the hypotenuse of triangle DEF is equal to the slope of the hypotenuse of triangle GHI.

Tags

CCSS.8.EE.B.6

What is the y intercept of this graph?

• (6,2)

• (-2,0)

• (2,6)

• (0,3)

• A

• B

• C

• D

Tags

CCSS.8.EE.B.5

• F

• G

• H

• J

Tags

CCSS.8.EE.B.5

What was Brian's rate of change?

• 3/2
• 1.5
• 60
• 30

Tags

CCSS.HSF.IF.B.4

Rate of Change is the same as Slope.

• True

• Sometimes

• False

Tags

CCSS.8.EE.B.5

What is the rate of change of the line?

• ^-1/4

• 4

• ¹/₄

• -1

Tags

TEKS.MATH.8.4C

TEKS.MATH.8.4A

formula for slope-intercept form

• y=bx+m

• y=mx+b

• y=kx

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3