what is the equation of the line that passes through

Question

(4,2) and (3,0) 

Answer 1

You should use the two points to compute the slope.

Next, use the point-slope formula y - y₁ = m(x - x₁)--using (best choice) (3,0) as P_1.  that is, substitute x₁ = 3, y₁ = 0