Please help! Given the function f(x) = 4 - 2x: If the domain is {-4, 0, 5}, find the range. A) {-4, 4, -6} B) {-4, 4, 14} C) {12, 4, -6} D) {12, 4, 14)
Mathematics · Middle School · Tue Nov 03 2020
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For finding the range of the given function we wanna put domain x values in f(x)
So the function is f(x) = 4 - 2x
Given domain = {-4, 0, 5}
We know that in order pair (x,y) are
X = domain ,y = range. In a relation x can have 2 or more than 2 ranges.so putting domain x values in function of x or you can say f(x) .
f(-4) = 4 - 2(-4) = 12
f(0) = 4 - 2(0) = 4
f(5) = 4 - 2(5) = -6
f(x) = 12, 4, -6.
So the range of given function f(x)=4-2x and domain {-4,0,5} is {12, 4, -6}.