Question 255391
x=2y+5
2y=x-5
y=x/2-5/2 (red line)
5x+y=91
y=-5x+91 (green line)
{{{ graph( 300, 200, -6, 50, -10, 100, x/2 -5/2, -5x +91) }}} (graph 300x200 pixels, x from -6 to 50, y from -10 to 100, of TWO functions x/2 -5/2 and -5x +91).
Solution =(17,6)