Question 208758
Hello there,

This is a pretty simple equation:

Simplifying
x + y = 4

Solving
x + y = 4

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-1y' to each side of the equation.
x + y + -1y = 4 + -1y

Combine like terms: y + -1y = 0
x + 0 = 4 + -1y
x = 4 + -1y

Simplifying
x = 4 + -1y






Now for x + y = -1




Simplifying
x + y = -4

Solving
x + y = -4

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-1y' to each side of the equation.
x + y + -1y = -4 + -1y

Combine like terms: y + -1y = 0
x + 0 = -4 + -1y
x = -4 + -1y

Simplifying
x = -4 + -1y

Then you would graph these two answers and draw a line to each one. The point where the lines connect should be you answer.
I hope this helps! good luck on your lesson or homework!!!
Delilah R.

PS: Let me know how you do!