Let f be a function such that f(x)=2x-4 is defined on the domain.2 is less than or equal to x and x is lss than or equal to 6. T he range of the function
2 answers:
F(x) = 2x - 4 f(2 ≤ x) = 2(2 ≤ x) - 4 f(x ≥ 2) = 2(x ≥ 2) - 4 f(x ≥ 2) = 2(x) ≥ 2(2) - 4 f(x ≥ 2) = 2x ≥ 4 - 4 f(x ≥ 2) = 2x ≥ 0 f(x ≥ 2) = x ≥ 0 f(x) = 2x - 4 f(x ≤ 6) = 2(x ≤ 6) - 4 f(x ≤ 6) = 2(x) ≤ 2(6) - 4 f(x ≤ 6) = 2x ≤ 12 - 4 f(x ≤ 6) = 2x ≤ 8 f(x ≤ 6) = x ≤ 4
The range of the function is the set of values it can achieve. The minimum value plugs in 2 to get 2*2-4, or 0. The maximum value uses 6, and is 6*6-4, or 8. Thus, the range is 0 to 8, inclusive.
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