SOLUTION: I submitt a request a minute ago and I don't think I remembered to Thank anyone. How rude of me! I'm usualy not like that. So Thank-you to who read it, and Thank-you to who reads t

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons -> SOLUTION: I submitt a request a minute ago and I don't think I remembered to Thank anyone. How rude of me! I'm usualy not like that. So Thank-you to who read it, and Thank-you to who reads t      Log On


   



Question 190702: I submitt a request a minute ago and I don't think I remembered to Thank anyone. How rude of me! I'm usualy not like that. So Thank-you to who read it, and Thank-you to who reads this:-) Good Day, I am having a problem writing a slope and y-intercept equation with a slope and y intercept inputs. 6 and y-intercept(0,9). If someone could help me I would be very grateful.
Answer by jim_thompson5910(35256) About Me  (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 6 which goes through the point (0,9), you can simply use the point-slope formula to find the equation:


---Point-Slope Formula---
y-y%5B1%5D=m%28x-x%5B1%5D%29 where m is the slope, and is the given point

So lets use the Point-Slope Formula to find the equation of the line

y-9=%286%29%28x-0%29 Plug in m=6, x%5B1%5D=0, and y%5B1%5D=9 (these values are given)


y-9=6x%2B%286%29%28-0%29 Distribute 6

y-9=6x%2B0 Multiply 6 and -0 to get 0

y=6x%2B0%2B9 Add 9 to both sides to isolate y

y=6x%2B9 Combine like terms 0 and 9 to get 9
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Answer:


So the equation of the line with a slope of 6 which goes through the point (0,9) is:

y=6x%2B9 which is now in y=mx%2Bb form where the slope is m=6 and the y-intercept is b=9

Notice if we graph the equation y=6x%2B9 and plot the point (0,9), we get (note: if you need help with graphing, check out this solver)

Graph of y=6x%2B9 through the point (0,9)
and we can see that the point lies on the line. Since we know the equation has a slope of 6 and goes through the point (0,9), this verifies our answer.