Question

How do I solve x + y = 3, x - y = 1 by graphing?

Answer 1

first get y on its own for both equation

Answer 2

so you would get y=-x+3
and
y=x-1
agree?

Answer 3

and then you would graph these two equation because they are in standard form y=mx+b
m is the slope of line and b is y-intercept

Answer 4

How do you get -x on the first one?

Answer 5

x + y = 3
when u take x from left side to right u have to change the signs
so since x is positive on left it would be negative on right