Question 768212


x+2y=10
2x+4y=10

or 

x+2y=10
x+2y=5

these line have the same slope but different intercepts so they are parallel (no solution)


{{{ graph( 300, 200, -6, 5, -10, 10, -.5*x+5, -.5*x+2.5  ) }}}