What is the x coordinate of the point where the lines x= 4y - 8 and 1/2x+y=11 intersect?

Answer 1

The co-ordinates of the intersection are simply the solution of the simultaneous set of equations.

x=4y-8

(1/2)x+ y =11

Clear fractions first: x + 2y=22

Substitute: 4y-8+ 2y = 22 => 6y = 30.

You finish it!