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Rewrite the equation 4x – 10y = 11 as a function of x.
4x - 10y = 11
-10y = -4x + 11; subtracted 4x from both sides:
10y = 4x - 11; we want y to be positive, multiplied equation by -1
; divide equation by 10 to give y a coefficient of 1
Could also write it
y = .4x - 1.1
usually f(x) = y
f(x) = .4x - 1.1