SOLUTION: Find the equation of the line that passes through the points (2, 4) and (1, 2).

Question 887412: Find the equation of the line that passes through the points (2, 4) and (1, 2).

Found 2 solutions by Alan3354, nerdybill:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
y = 2x
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
Find the equation of the line that passes through the points (2, 4) and (1, 2).
.
slope between two points:
m = (y2-y1)/(x2-x1)
m = (2-4)/(1-2)
m = (-2)/(-1)
m = 2
.
Now, use the slope (2) and either of the two given points (1,2) and plug it into the "point-slope" form
y - y1 = m(x - x1)
y - 2 = 2(x - 1)
y - 2 = 2x - 2
y = 2x (solution)

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