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Question 106527: Find the slope and y-intercept. x = -1. I'm not sure if my slope is 0 or undefined or if my y-intercept is -1 or there is no y-intercept.
y = mx+b
y = 0 + (-1)
y = -1
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Find the slope and y-intercept. x = -1. I'm not sure if my slope is 0 or undefined or if my y-intercept is -1 or there is no y-intercept.
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You are having trouble because you are taking an equation which is not
a function and trying to force it into a function form. Notice that you
started with x=-1 and ended up with y=-1 for no reason.
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x=-1 graphs as a vertical line containing all points where x=-1.
So (-1,0) and (-1,2) would be two points on the line.
Then the slope would be (2-0)/(-1--1) = 2/0 which is "undefined".
So the slope is "undefined".
And since the line is parallel to the y-axis, there is no y-intercept.
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Cheers,
Stan H.
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