Which number is an element of the range of the equation y=2x-7 for the domain of {-4,-3,-2} a.15 b.3 c.0 d.-1

Answer 1

You can substitute each element from the domain {-4, -3, -2} into the equation for x and then simplify to get y, which make up the elements of the range.

Hope this helps,

Adam

Answer 2

Just plug each value of the domain into the equation to solve for the range.

y=2x-7

y=2(-4)-7

y=-8-7

y=-15

y=2(-3)-7

y=-6-7

y=-13

y=2(-2)-7

y=-4-7

y=-11

So your range is { -15, -13, -11 }

That means that your answer is none of the above.... unless you mistyped and a is supposed to be -15.

I would recommend double-checking your question.