Math Help - Coordinated Geometry

1. Coordinated Geometry

Another line has equation y=3x+7 and passes through the point (h,h+15). How to calculate the value of h

2. Originally Posted by Sohail
Another line has equation y=3x+7 and passes through the point (h,h+15). How to calculate the value of h
The coordinate mean when x=h then y=h+15 since it is on the line. Thus,
h+15=3h+7
Thus,
h+8=3h
Thus,
8=2h
Thus,
h=4