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January 26, 2015

January 26, 2015

Posted by **Alison** on Sunday, November 3, 2013 at 7:52pm.

A. Y= 1/2X - 6

B. Y= 1/2X

C. Y= 2X + 12

D. Y= 2X - 9

- Math -
**Alison**, Sunday, November 3, 2013 at 7:53pmI really need help with this question so can anyone please explain to me how I can solve this question and please explain to me how you found the answer to this question step by step.

- Math -
**Steve**, Sunday, November 3, 2013 at 8:08pmLook up the two-point form of the equation for a line. It is based on the fact that the slope of a line is constant. The slope here is (3+5)/(6-2) = 2.

Now starting from the point (2,-5), pick any other point (x,y) on the line.

The slope between those two points will always be the same: 2. So, for any point (x,y),

(y+5)/(x-2) = 2

(y+5) = 2(x-2)

y+5 = 2x-4

y = 2x-9

You could just as easily use the other point (6,3) as a starting place:

y-3 = 2(x-6)

y-3 = 2x-12

y = 2x-9

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