What TWO requirements does a graph need to meet to be considered proportional?

Given tan∅=4/3 and π< ∅< (3π)/2; find cos2∅ a. -24/25 b. 24/25 c. -24/7 d. -7/25

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

An electrician cuts a 136 foot long piece of cable. one piece is 16 feet less than 3 times the length of the other piece. find the length of each piece