SOLUTION: How do I find the slope and y-intercept of the graph of an equation and then give the y-intercept as an ordered pair?
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Question 548831: How do I find the slope and y-intercept of the graph of an equation and then give the y-intercept as an ordered pair? Answer by oberobic(2304) (Show Source):
You can put this solution on YOUR website! The first step is to get the equation into slope-intercept form to immediately see your answer to the slope and to the y-intercept.
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y = m*x + b
m = slope
(0,b) = y-intercept
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Let's assume you have the equation:
2x + y = 4
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Subtract 2x from both sides to get it into slope-intercept form.
y = -2x + 4
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You can observe:
m = -2
(0,4) = y-intercept.
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You only need one more point to be able to draw a line.
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A good candidate is to find the x-intercept, which is often asked for.
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Set y = 0 and solve for x.
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0 = -2x + 4
2x = 4
x = 2
(2,0) = x-intercept
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A graph is always useful.
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Done.
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