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​Q19: Question – Paper 1 – June 2018

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Content:

• Perpendicular Lines
• Gradient with Unknowns (very similar technique to this)​

Quizzes:

• Perpendicular Lines​
• Gradient with Unknowns

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Question

19) The point P has coordinates (3, 4)
The point Q has coordinates (a, b)

A line perpendicular to PQ is given by the equation    3x + 2y = 7

Find an expression for b in terms of a.

[5 marks]

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