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Question 118783: write the equation of the line with given slope and y-intercept. Then graph each line using the slope and y-intercept.
slope: 5; y-intercept: (0,-2)
Answer by jim_thompson5910(35256) (Show Source):
You can put this solution on YOUR website!
If you want to find the equation of line with a given a slope of which goes through the point ( , ), you can simply use the point-slope formula to find the equation:
---Point-Slope Formula---
where is the slope, and is the given point
So lets use the Point-Slope Formula to find the equation of the line
Plug in , , and (these values are given)
Rewrite as
Distribute
Multiply and to get
Subtract 2 from both sides to isolate y
Combine like terms and to get
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Answer:
So the equation of the line with a slope of which goes through the point ( , ) is:
which is now in form where the slope is and the y-intercept is
Notice if we graph the equation and plot the point ( , ), we get (note: if you need help with graphing, check out this solver)
Graph of through the point ( , )
and we can see that the point lies on the line. Since we know the equation has a slope of and goes through the point ( , ), this verifies our answer.
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