Question

HELP ASAP!!! I HAVE TO DO THIS THEN STUDY FOR A TEST!!!

Directions: given each function and domain, find the range values.

1. y=5x-9; domain = {1,3,7}

2. y=x^2-2x; domain = {-3,0,5}

Answer 1

1){-4, 6, 26}

2){15, 0}

Explanation:

So the domain is the x value and the range is the y value!

So all you need is to substitute the x values into the equation!

1)Substitue x=1 into y=5x-9

y=5-9

y=-4

Substitute 3 into y=5x-9

y=15-9

y=6

Substitute 7 into y=5x-9

y=35-9

y=26

The range for the first problem = {-4, 6, 26}

2)Substitute x=-3 into y=x^2-2x

y=9+6

y=15

Substitute x=0 into y=x^2-2x

y=0

Substitute x=5 into y=x^2-2x

y=25-10

y=15

The range for the second problem = {15, 0}

Hope this helps! :D