What is the equation of the line that passes through the points (1,-1) and (3,3)

y=2x-3

Step-by-step explanation:

y=mx+b

-1=1m+b

3=3m+b

subtract those two ^

-4=-2m

2=m

-1=1m+b

-1=1(2)=b

-1=2+b

-3=b

y=2x-3

an altitude of 15,000 feet

step-by-step explanation:

answer: since the question is talking about growth you have to use the growth formula which is inital amount (1 + growth)^time

step-by-step explanation:

the intial amount is 1200, the growth is 4.8, and the time is 7. plug those numbers into the equation, also i think you have to change 4.8 into a percent. but, i have forgotton how to do that. if this is a online class go on to the lesson.