Question

Solve for x & y solve y = -x + 7 when y = 2x + 1

Answer 1

Subtract both equations to eliminate y:

y = -x +7

-

y= 2x +1

_______

0= -3x +6

Solve for x:

3x = 6

x= 6/3

x= 2

Replace x on any initial equation and solve for y:

y= -x+7

y= -2+7

y= 5

Solution:

x=2

y=5