Question

draw the graph of x+y=8

Answer 1

Just put x=0 to get y-intercept, it comes out as 8, and put y=0 to get x-intercept, which too comes out as 8.

Now as above mark the two intercepts and join to form line.
graph{((x-8)^2+y^2-0.025)((y-8)^2+x^2-0.025)(x+y-8)=0 [-7.79, 12.21, -1.32, 8.68]}

Answer 2

Answer:

x=1 y= 7

x=0 y=8

x=-1 y=9

x=-2 y=10

x=2 y=6