Question 69950
2x+y=15 y=-2x+15
3y=-6x+30 y=-6x/3+30/3 y=-2x+10
ANSWER IS A) THEY ARE PARALLEL
{{{ graph( 300, 200, -6, 15, -10, 15, y = -2x +15, y = -2x +10) }}} (graph 300x200 pixels, x from -6 to 15, y from -10 to 15, of TWO functions y = -2x +15 and y = -2x +10).