My question states that I must solve the equation (showing my work)   x + y = -2   and then graph it.
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3 Answers

y=-x-2....strate line with slope=-1  (-45 degrees)

go thru point  (0,-2)
by

Given y+x=-2
y=-2-x Subtract x from both sides.
y=-x-2 Rearrange the terms

Looking at y=-x-2

We can see that the equation is in slope-intercept form y=mx+b

Where the slope is m=-1 and the y-intercept is b=-2

Since b=-2

This tells us that the y-intercept is.

Remember the y-intercept is the point where the graph intersects with the y-axis

So we have one point (0,-2)

Image - http://www.wolframalpha.com/input/?i=graph+the+equation+y+%2B+x+%3D+-2

Math Problem Solver - http://www.mathcaptain.com/math-problem-solver.html

by Level 8 User (30.1k points)
edited by

x + y = -2 

Subtracting x from both sides:

y = -x -2

So the slope m = -1, and the y intercept is -2

Graph here:

http://statsfiddle.info/Graph/SolveLinearEquation?LinearSolutionType=SlopeAndYIntercept&Slope=-1&YIntercept=-2

by Level 4 User (6k points)
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