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Mathematics 9 Online
OpenStudy (anonymous):

Please help write equation very confused: attached file

OpenStudy (anonymous):

OpenStudy (anonymous):

You need two points of the equation. The slope interceptform is y = mx + b.

OpenStudy (anonymous):

so can i use -5,4

OpenStudy (anonymous):

Yes, any pair of numbers of the line.

OpenStudy (anonymous):

so how do i put it in the formula?

OpenStudy (anonymous):

But put first the x value (horizontal)

OpenStudy (anonymous):

m = (y1 - y2)/(x1 - x2)

OpenStudy (anonymous):

Once you`ve got m, solve for b just putting one point for x and y.

OpenStudy (anonymous):

m=-5x+4

OpenStudy (anonymous):

You have the points ( 0, 1) and (4, -5), right?

OpenStudy (anonymous):

yeah

OpenStudy (anonymous):

So, m = (-5-1)/(4-0)

OpenStudy (anonymous):

and then ?

OpenStudy (anonymous):

is tht the answer

OpenStudy (anonymous):

You have y = (-3/2) x +b ; take the values of x and y from one point of the line and solve for b

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