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Solve the simultaneous equations: 2x-3y = 16 x+2y= -6

x=2 y=-4

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Make r the subject of the formula x = (3r - 4)/5

A is the point (2,-5), B is the point (-1,4). (a) What is the gradient of the line passing through points A and B? (b) Does the point (-100,301) lie on the line passing through points A and B?

How can I work out the equation of a line defined by 2 known points?

Show that AB is not parallel to CD.

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