Question

What is the equation of a line that passes through point r(−3, 5) and has a slope of 4?

Answer 1

The equation of any line is:
$y=mx+b$  m is slope.

We just need to put inside of equation x=(-3) and y=5:
$5=4*(-3)+b$
$17=b$

It follows that equation of a line is:
$y=4x+17$