exam Maths Puzzle Numerical Ability

5x+24=2x+15

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exam Other Question

Quadrilateral ABCD has vertices A(0,-2), B(9,1), C(4,6), and D(1,5). Prove: a) Quadrilateral ABCD is a trapezoid. b) Quadrilateral ABCD is an isosceles trapezoid. Determine which two equations represent perpendicular lines.
(1) y = 4x-6
(2) y = 1/4x+6
(3) y = -1/4x+6
(4) y = 1/4x-6