Question

What is the equation of a line with a slope of ​3​ and a point (3, 1) on the line?

Answer 1

The equation of a line that passes through the point (x1,y1) and has a slope of m is
y-y1=m(x-x1)
given
(3,1) and m=3

y-1=3(x-3)
y-1=3x-9
y=3x-8