Question

Equation of a line in general form with a point (-3,0)

Answer 1

The equation of the line that has slope m and passes through point (x1, y1) is

y - y1 = m(x - x1)

You have point (-3, 0), so x1 = -3, and y1 = 0.

y - 0 = m(x - (-3))

y = m(x + 3)