Similar Triangles and Slope on a Graph

Identify the slope (AC) of triangle ABC.

• 2

• 1/2

• -2

• -1/2

Identify the slope of EF in triangle DEF.

• 1

• -1

• 3

• -3

Identify the slope (CA) of triangle ABC.

• 1/3

• 3

• -3

• -1/3

• 2/3

• 3/4

• 3/2

• 1/3

Identify the slope of the hypotenuse of triangle DEF.

• 1

• -1

• 3

• -3

Identify the slope of the hypotenuse of triangle ABC.

• 1

• -1

• 3

• -3

Which of these lines has a slope of -3?

• A

• B

• C

• D

What is the slope of the line graphed below? Simplify your answer. Be careful of the scale on the y-axis!

• 30/3 = 10/1 = 10

• 3/30 = 1/10

• 3/3 = 1

Are the triangles drawn along the line similar? Remember: Similar: same shape, different size.

• yes

• no

Select the triangle that could lie on a line with a slope of 3/2.

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