Question

Please help explanation if possible

Answer 1

Explanation:

1. if we multiply gradient of the perpendicular line we are suppose to get -1
2. the gradient of y=-x-2 is -1(gradient is the coefficient of x)
3. therefore the gradient of other line is 1
4. y =mx+c
5. 10=-5 +c
6. c=15
7. therefor the equation of the line is y=x+15