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Y = 4/x^2
If that's y times 4, the answer is 4y
(x+y)/2
x = 2 so x squared = 4 and 2x squared = 2 times 4 = 8; y = 4 so xy = 2 times 4 = 8 and 3xy = 3 times 8 = 24; y squared = 4 times 4 = 16 and 4y squared = 4 times 16 = 64; so 8 + 24 - 64 = 32 - 64 = -32
(y - 4)/(x-2) = (4 - (-6) )/(2 - (-3)) = 22 x - 4 = y - 4y = 2x(y - 4)/(x-2) = (4 - (-6) )/(2 - (-3)) = 22 x - 4 = y - 4y = 2x