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Perpendicular Lines and the equation of a tangent

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Question 5

Here are the equations of 5 straight lines.

A:y=5x−1 A: y = 5x - 1 A:y=5x−1 B:y=−5x+2 B: y = -5x + 2 B:y=−5x+2 C:y=15x+3 C: y = \frac{1}{5}x + 3 C:y=51​x+3 D:y=−15x−4 D: y = -\frac{1}{5}x - 4 D:y=−51​x−4 E:y=x+8 E: y = x + 8 E:y=x+8
a.

Write down the letter of the line that is parallel to y=x−2y = x - 2y=x−2

[1]
b.

Write down the letter of the line that is perpendicular to y=5x+6y = 5x + 6y=5x+6

[1]

Perpendicular Lines and the equation of a tangent Questions

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