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what is the slope intercept form of y+x=0?

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2 Answers

Hi Kynzie;
y+x=0
Slope-intercept form is y=mx+b.
m is the slope.
b is the y-intercept, the value of y when x=0.
y+x=0
Let's subtract x from both sides...
-x+y+x=0-x
y=-x+0
We do not need the zero, except to highlight the fact that the y-intercept is 0.
The slope is -1.
y=-x
 Given Y + x = 0   
    To find Y intercept , and slope you need to make it in the form of  Y = mx +b
 
     in this case:
                Y + X = 0
       becomes  Y = -x
 
            slope coefficient of  X , m = -1
 
             and b = 0
     The line goes through origin.