Question

what equation represents a line passing through the points 2,-2 and -5,12

Answer 1

do you mean (2,-2) and (-5,12)?

Answer 2

Use this... y- y_1= m(x-x_1)

where m = ( y_2-y_1 )/( x_2- x_1)

(x_1,y_1) and (x_2,y_2) are two points passing throught the line.

Answer 3

Substitute and get your answer