What is the solution to the system of equations? x + y=3
y=x-5

A. (-1,4)
B. (2,1)
C. (4,-1)
D. (1,-4)
E. (1,2)

C. (4 , –1)

Step-by-step explanation:

x + y = 3

y = x –5

x + y = 3

–x + y = –5

–

2x = 8

x = 4

x + y = 3

4 + y = 3

y = 3 –4

y = –1

answer: c

substitute in the values.

for a:

f(0) = 0 + 9

f(0) = 9

a is a solution.

for b:

f(7) = 14 + 9

f(7) = 23

b is a solution.

for c:

f (3) = 6 + 9

f(3) = 15

c is not a solution. it's supposed to be 14.

for d:

f(2) = 4 + 9

f(2)= 13

d is a solution.