How would I graph these equations?

Question

x + y = 5
3x-y=11

Answer 1

they are all straight lines.

choose an x and finde the y
that will give you one point of the graph ( line ).

choose another x and find the other y
that will give you a seconfd point of the line.

next draw the line through the two points.

--------
x + y = 5

choose x = 0.
then y = 5.
first point (0,5)

choose y = 0 then x = 5
second point (5,0)
.

Answer 2

x=5-y
3(5-y)-y=11
15-3y-y=11
-4y=11-15
y=-4/-4
y=1

x=5-1
x=4

Y
2
1-------*
0 1 2 3 4 X