exam Maths Puzzle Numerical Ability

The midpoint of AB is M(-2,1). If one endpoint is A(-7,3), what are the coordinates of B?

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exam Other Question

determine the equation of the line, in slope-intercept form, that contains the points
(-5,9) and (-5,-2)
From a rectangular piece of cardboard having dimensions 20 inches by 30 inches an open box is to be made by removing squares of area x squared from each corner.
1. Draw and label