book Maths Puzzle Numerical Ability

please help me solve to graph three points on the same cartesian coordinate system: (-2), (0,0), (4,0)

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book Other Question

what is the equation form passing through lines (1,3)and (-1,2) Hi.

I am having trouble understanding this question and it reads as follows:

(x+3)^2 = 12

Thanks to anyone who can help!