# mathematics

x is partly constant and partly varies as y^2 when y =11,x=52.8and when y = 5 and x = 8 find (a) equation connecting x and y (b) y when x = 105.6

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1. x = ky^2 + m

52.8 = 121k+m
8 = 25k+m

43.2 = 96k
Now get k, and use that to find m.

Then use k and m to find y when x=105.6

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