Algebra
posted by Diana .
how to plot the equation and find the y intersect of y + x = 10
thank you

To find the yintersect, you can just set x=0, and see what's left:
y + x = 10
y + 0 = 10
y = 10
So (0, 10) is your intersect.
This is a straight line, so all you have to do is find two points, and use a ruler to draw a line through them. Let's find the xintercept as our other point, so we set y = 0 and read it off:
y + x = 10
0 + x = 10
x = 10
So (10, 0) is another point on the line.
Now draw the two points, and just draw the line that runs through them both.