flyinglikeabird?
Write the equation of a line with slope m = 3 and including point (3, 5) in slopeintercept form.



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ajprincess
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Let the equation of the line be
y=mx+c
To find c
plug in the values y=5, x=3 and m=3 in y=mx+c.
Can u do it @flyinglikeabird??

flyinglikeabird?
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c is 1?

flyinglikeabird?
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err 4

flyinglikeabird?
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3x3 = 9 + 4 = 5

ajprincess
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yup c=4.
So ur equation becomes
y=3x4.
Getting it?

flyinglikeabird?
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I never really understand algebra. It all seems like made up crap. I see what you did, but what is c?

ajprincess
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c is yintercept

ninab731
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Y=mx+b
5=3(3)+b
5=9+b
B=4

ajprincess
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@ninab731
b=4
5=9+b
59=b
4=b

flyinglikeabird?
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Ahh, okay. It all makes sense how you did it, don't understand why it is that way...

ajprincess
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y=mx+c is the general slopeintercept form

flyinglikeabird?
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I get it, just feels like I am missing something. But thanks for your help!

ajprincess
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yw:) if anythng is nt clear plz ask