exam Maths Puzzle Numerical Ability

Multiply: [ (1/2)x+(1/3)] [(1/2)x-(1/4)]

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exam Other Question

I am needing to find the x coefficient of this y=9.5x-1250 I am having a problem answering this question. Find the value of x or y so that the line passing through the two points has the given slope. (-3,y)(-9,-2); m=1. I got -3y=18, y=-6. Am I doing it correctly.