Question 154484
First you need to put these equations in the line form [Y=mX+b] where the [m] term=slope & the [b] term=y intercept.
7x+2y=9
2y=-7x+9
y=-7x/2+9/2
y=-3.5x+4.5 (red line)
4x+5y=6
5y=-4x+6
y=-4x/5+6/5 (green line)
{{{ graph( 300, 200, -6, 5, -10, 10, -3.5x +4.5, -4x/5 +6/5) }}} (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions -3.5x +4.5 and -4x/5 +6/5).