Posted by Diana on Wednesday, October 7, 2009 at 3:46pm.
how to plot the equation and find the y intersect of y + x = 10
thank you

Algebra  jim, Wednesday, October 7, 2009 at 6:53pm
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.
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