exam Maths Puzzle Numerical Ability

x + 4 over 3 - x - 5 over 6 = 4

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exam Other Question

I need to find the equation for this regression line

x 12 14 10 9 15 8
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y 29 35 28 23 36 18

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Find the x- and y-intercepts of x + 3y + 2 = 0