Question

I WILL UPVOTE!!

Determine the range of the function f(x) = 7x + 2 when the domain is {-1, 3, 5}.



{-7, 21, 35}


{-9, 19, 33}


{-5, 23, 37}


{-1, 3, 5}

Answer 1

the domain is ur x values...the range is ur f(x) values

f(x) = 7x + 2......when the domain (x) is -1
f(-1) = 7(-1) + 2
f(-1) = -7 + 2
f(-1) = -5....so ur range is -5

f(x) = 7x + 2.....when x = 3
f(3) = 7(3) + 2
f(3) = 21 + 2
f(3) = 23....ur range is 23

f(x) = 7x + 2...x = 5
f(5) = 7(5) + 2
f(5) = 35 + 2
f(5) = 37....range is 37

so ur answer is { -5,23,37}