Question 107447
{{{ graph( 300, 200, -6, 5, -10, 10, 2x-4, 2x-6) }}} 
{{{ graph( 300, 200, -10, 5, -10, 10, x-4, 3x/2-1/2) }}} 
{{{ graph( 300, 200, -6, 5, -10, 10, x/2-9/2, x/2-3/2) }}} 

the solution is where these lines intersect.

problem 1 and 3 dont have solutions cause they are parallel lines