This question is holding me back , can some one me

So, the domain of this function is x is greater than or equal to 2 and is less than or equal to 6. So to find the range all you have to do is plug the lowest and highest values that x can be into the function equation.

f (x) is the same as the y value on the graph.

So in this case, 2 is the lowest value x can be

f (x) = (2)(2) - 4

f (x) = 0 <-- this is the lowest value in your range

the highest value x can be is 6

f (x) = (2)(6) - 4

f (x) = 8

So now we found the lowest and highest values y can be.

0 is less than or equal to y which is less than or equal to 8. This corresponds to number 1.