Question

X+y=4

x=-1

A. (-1,5)
B. (5,-1)
C. (-1,3)

Answer 1

A. (-1, 5)

Explanation:

x + y = 4

x = -1

Substitute x with -1 in the first equation.

-1 + y = 4

Add 1 to both sides.

y = 5

We have x = -1; y = 5.

Answer: A. (-1, 5)