Question

(-3,5),slope=-2

Answer 1

I bet you want to find the equation of a line. Do you know the point-slope formula?

Answer 2

\(y – y_1 = m(x – x_1)\) where you have the slope m and point \((x_1,y_1)\)

Answer 3

I usually do y=mx+b and plug in (-3, 5)
so 5=-2*(-3)+b so b=-1
y=-2x-1

Answer 4

That works too.