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What is the equation in slope intercept form of a line that passes through points 4 and 1 and 5 and negative 1?
Wiki User
∙ 12y ago
Find the slope of these points. (4,1) and (5,-1)
m(slope) = Y2 - Y1/X2 - X1
m = -1 - 1/5 - 4
= -2/1 or - 2
Now I prefer to use one set of nice points and this formula, the point slope formula. Use (4,1)
Y - Y1 = m(X - X1)
Y - 1 = - 2(X - 4)
distribute the slope
Y - 1 = - 2X + 8
add 1 to each side
Y = - 2X + 9
-----------------the equation
Wiki User
∙ 12y ago
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