8.4A Slope with Similar Triangles

8.4A Slope with Similar Triangles

Assessment

Assessment

Created by

Jocelyn Calderon

Mathematics

8th Grade

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20 questions

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1.

Multiple Choice

30 sec

1 pt

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The slope of line CA is  32-\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  12\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.

2.

Multiple Choice

30 sec

1 pt

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

1(5)1(2)=131(5)\frac{1-\left(-5\right)}{1-\left(-2\right)}=\frac{1-3}{1-\left(-5\right)}

1(5)1(2)=5131\frac{1-\left(-5\right)}{1-\left(-2\right)}=\frac{5-1}{3-1}

2(5)21=5131\frac{-2-\left(-5\right)}{-2-1}=\frac{5-1}{3-1}

1(2)1(5)=3151\frac{1-\left(-2\right)}{1-\left(-5\right)}=\frac{3-1}{5-1}

3.

Multiple Choice

30 sec

1 pt

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Triangle HJK and triangle PMK are similar right triangles. The coordinates of all the verticces are integers. Which statement is true about the slope of line HK and the slope of line PK.

The slope of line HK is less than the slope of line PK because the ratio of the change in y-values of the endpoints to the change in x-values of the endpoints is less for line HK than it is for line PK.

The slope of line HK is equal to the slope of line PK because the ratio of the change in y-values of the endpoints to the change in x-values of the endpoints is the same for line HK as it is for line PK.

The slope of line HK is greater than the slope of line PK because the ratio of the change in y-values of the endpoints to the change in x-values of the endpoints is greater for line HK than it is for line PK.

The relationship between the slope of line HK and the slope of line PK cannot be determined because the traingles are congruent.

4.

Multiple Choice

30 sec

1 pt

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Triangle PQR and RST are similar right triangles. Which proportion can be used to show that the slope of line PR is equal to the slope of line RT?

374(7)=532(4)\frac{3-7}{-4-\left(-7\right)}=\frac{-5-3}{2-\left(-4\right)}

3(4)7(7)=523(4)\frac{3-\left(-4\right)}{7-\left(-7\right)}=\frac{-5-2}{3-\left(-4\right)}

4(7)37=2(4)53\frac{-4-\left(-7\right)}{3-7}=\frac{2-\left(-4\right)}{-5-3}

4(3)77=2(5)43\frac{-4-\left(-3\right)}{-7-7}=\frac{2-\left(-5\right)}{-4-3}

5.

Multiple Choice

15 mins

1 pt

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Identify the slope (AC) of triangle ABC.

2

1/2

-2

-1/2

6.

Multiple Choice

15 mins

1 pt

Media Image

Identify the slope of EF in triangle DEF.

1

-1

3

-3

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