To relate the slope of a line to similar triangles

To relate the slope of a line to similar triangles

Multiple Choice

At the same time a 4-foot fencepost casts a 6-foot shadow, a cellular tower casts a 50-foot shadow. How tall is the cellular tower to the nearest tenth foot?

• 0.5

• 33.3

• 75

Multiple Select

A mother and daughter are standing next to each other. The mother is 160 centimeters tall and has a shadow that is 100 centimeters long. The daughter’s shadow is 50 centimeters long. How tall is the daughter?

• 80 cm

• 31.25

• 320

Multiple Choice

What is the rise?

• 3

• 2

• 4

• 9

Multiple Choice

What is the run?

• -2

• -4

• 2

• 4

Multiple Choice

What is the slope?

• $-\frac{\text{2}}{3}$

• $\frac{3}{2}$

• $\frac{2}{3}$

• 
  
  $-\frac{3}{2}$

Open Ended

Plenary:

(0, 1), (5, 4), and (10, 7).

Find two slopes and compare them.