Find a linear equation whose graph is the straight line with the given properties. through (30, −6.5) and increasing at a rate of 15 units of y per unit of x.

Answer 1

slope = m = 15

y=mx + b where b=y intercept. plug in the point to calculate b

-6.5 = 15(30) + b

b =-6.5 -450 = -456.5

the line is: y=15x -456.5