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Two Perpendicular Lines
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using point,P1 on red line
(, )
and the given slopes of blue line m2 =

Calculate the slope of red line
m1 = for two perpendicular lines the first slope is equal to the negative reciprocal of the second slope.

Two lines perpendicular to each other is also called in mathematics as orthogonal lines. In statistics, when input variable is perpendicular or orthogonal to the output variable it means the two variables are independent to each other there is no correlation. The input variable can't be used to predict the output variable.

Then substitutes its values in Equation 1

Formula Recall of slope and y-intercept

y = mx + b ; where b - is the y-intercept ----- equation 1


y1 =

m1 * x1 + b


b = y - intercept , when x = 0


ANSWER, y = x + ; written in slope form is the equation of red line.

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