What is the equation of the line that passes through the points (2, -1) and (5,5)

Answer 1

the line has slope = m = (5--1)/(5-2) = 6/3 = 2

y=mx+b

y=2x + b, where b is the y intercept. calculate b by plugging in either point

5=2(5)+b

b = 5-10=--5

y=2x-5 is the equation of the line through the two given points