exam Maths Puzzle Numerical Ability

Could someone help me with the following: Find three ordered pairs and graph the following equation. x - 2y = 4 Thanks Alot

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exam Other Question

Please help me solve this question.

Find the equation of the line joining A(-1, -9)to B(6, 12)

Another line passes through C(7, -5) and meets AB at right angle at D. Find the equation of CD and calculate the coordinates of D.
x=-3**2**2;