Cassie wants to determine the length of the shadow that a 60-foot tall telephone pole casts without measuring it. if cassie's mailbox, which is 42 inches in height, casts a shadow that is 21 inches in length, how long is the shadow that the telephone pole casts?

Answer & Explanation:

Cassie wants to determine the length of the shadow that a 60-foot tall telephone pole casts without measuring it. If Cassie's mailbox, which is 42 inches in height, casts a shadow that is 21 inches in length, how long is the shadow that the telephone pole casts?

y=3x+4

step-by-step explanation:

given the points a(0,4) and b(-4, -8)

eqn of line ab: (y-4)/(x-0)=(-8-4)/(-4-0)

(y-4)/x=-12/-4=3

y=3x+4