Question

Need help ASAP

Which graph represents the solution to the given system y=-x+4
y= 1/3 x +8
1: (-3,7)
2: (0,8)
3; (3,7)
4: (0,4)

Answer 1

You have to substitute. So....

(-3,7): YES

y = -x + 4 y = 1/3x + 8

7 = - -3 + 4 7 = 1/3(-3) + 8

7 = 3 + 4 7 = -1 + 8

7 = 7 7 = 7

(0,8): NO

y = -x + 4 y = 1/3x + 8

8 = -0 + 4 8 = 1/3(0) + 8

8 = 4 8 = 0 + 8

8 = 8

(3,7): NO

y = -x + 4 y = 1/3x + 8

7 = -3 + 4 7 = 1/3(3) + 8

7 = 1 7 = 1 + 8

7 = 9

(0,4): NO

y = -x + 4 y = 1/3x + 8

4 = -0 + 4 4 = 1/3(0) + 8

4 = 4 4 = 0 + 8

4 = 8

Answer 2

it's the first graph (-3,7)