Question

1.
Solve the following system using substitution: y = 4x - 7 and y = 2x + 9

(25,8)

(8,25)

(0,8)
2.
Solve each system using elimination: x + y = 10 and -x - 2y = -14

(-4, 6)

(6, 4)

(-14, 10)

Answer 1

1)4x-7=2x+9
Subtract 2x
2x-7= 9
Add 7
2x=16
X= 8

2(8)+9=25
(8,25)

X+y=10
-X-2y=-14
-y= -4
Y=4
X+4=10
X=6
(6,4)