(y=-7)*-1
y=-21+1x
-y=7
y=-21+1x
0=-14+1x......>14=x
substituted to 2nd equation y=1(14)-21=-7
check -7=-7+0 .....>-7=-7
You can graph that! Put 3 on the y line and then from that y interception go up 2 over one
- 35 - 2.5 x = - 100
-2.5 x = - 100 + 35
-2.5 x = -65 * (-1)
x = 65 / 2.5
x = 26
hope this helps!.