Question

The equation y+2=2(x-d) is the line that passes through the points (-1,-2) and (2,4). What is the value of d?

Answer 1

-2+2=2(-1-d)
0=2(-1-d)
0=-2-2d
2=-2d
-1=d

4+2=2(2-d)
6=2(2-d)
6=4-2d
2=-2d
-1=d

so the answer for d would be -1, I substituted the coordinates of x and y with the points to get the answer