lordexplosionmuder
Answered

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Question
Write an equation of the line passing through the point A(8, 2) that is perpendicular to the line y = 4x−7.

Sagot :

Answer:

y = m x + b equation of a straight line

m m' = -1    condition for perpendicular lines

If y = 4 x - 7     then m = 4 so m' = -.25

Y = -.25 X + A      we need to find A

A = Y + .25 * 8 = 2 + 2 = 4

Y = -.25 X + 4

Check:

2 = -.25 * 8 + 4 = -2 + 4 = 2

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