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Through: (-3,-5), perp. to y = -3/5x - 1

User Josh Farneman
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1 Answer

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24 votes

Answer:

y = 5/3x

Explanation:

product of gradient of two perpendicular lines is -1

m1 × M2 = -1

given that y = -3/5x - 1 is a slope -intercept equation, then gradient is -3/5

(-3/5)m2 = -1. to get M2 we divide by -3/5 both sides

M2 = 5/3

using the formula slope= ∆y/∆x we can write the equation of line 2. we need slope, one of the known points and one unknown point (X,y)

5/3 = (y- -5)/(X - -3)

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

we cross multiply

3y +15 = 5x +15

3y = 5x +15 - 15

3y = 5x

y = 5/3x

User Skyy
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