exam Maths Puzzle Numerical Ability

Find the distance between (-4, 0) and (-5, -3)

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exam Other Question

the average score for a class on test 1 was 88. the average score for test 2 was 77. what was the percent decrease in the average score from test 1 to test 2? ABCD is a square. Point A has co-ordinates (2,4) and the line ODC has equation y=x.
find the equation of line AD
find the co-ordinates of point D
find the area of square ABCD