Question

Which equation is a point-slope form of the equation of this line (-2, 1 ) and (1, 7 )

Answer 1

The point-slope formula:

`y-y_1=m(x-x_1)\\\\m=(y_2-y_1)/(x_2-x_1)`

We have (-2, 1) and (1, 7).

Substitute:

`m=(7-1)/(1-(-2))=(6)/(3)=2`

`y-1=2(x-(-2))\\\\y-1=2(x+2)`