SOLUTION: Find an equation of the line containing the points (3,5) and (9,9)

Question 343187: Find an equation of the line containing the points (3,5) and (9,9)

Answer by nyc_function(2741) (Show Source): You can put this solution on YOUR website!
We first need to find the slope.

Let m = slope

m = (9 - 5)/(9 - 3)

m = 4/6

m = 2/3

The slope of the equation we are looking for is 2/3.

We now plug one of the points given (your choice which point to use) and the slope into the point-slope formula and solve for y.

y - y1 = m(x - x1)....This is the point-slope formula found in most math books.

I will use the point (3,5) but you can use the other point if you'd like.

y - 5 = 2/3(x - 3)

y - 5 = (2/3)x - 2

y = (2/3)x - 2 + 5

y = (2/3)x + 3

Understand?

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