Question

If a function rule is 2x – 3, what is the output for the input 3?

Answer 1

The function rule can be written as: f(x) = 2x-3

So, when we input 3, we replace all of the x's for 3's and have: f(3) = 2(3)-3.

This simplifies to be: f(3) = 3, meaning that 3 is the output.

Hope this helps!

Answer 2

Answer:3

Explanation:

The output value is y so set an equation at y=2x-3. Now x is the input value so plug in 3 for x. Two times three is 6 and then you have to subtract three from that. So the output value for an input of 3 is 3.