What is (1,7) and (4,22) in y=mx+b form

Question

The line that passes through it

Answer 1

slope = m = (22-7)/(4-1) = 15/3 =5

y= 5x + b, solve for b by plugging in either point

7= 5 + b

b = 2

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