Question

1. If the slope of a line is already known, what else is needed in order to create an equation?

Answer 1

a point on the line, this allows you to work out the constant - vertical translation of the line.

Answer 2

y=mx+b
if slope is known (m) then the y intercept b would be required to solve for y

Answer 3

slope
point say (1,2)
another point (x,y)
you get y=mx+c