Question

Please help!! Which values of a and b in the exponential function y=a*b^x would result in the following graph?

Answer 1

Answer:
`a=-3, b=2`

Explanation:

1. To solve this problem substitute the values of
`a` and
`b` into the function
`y=a*b^(x)` and prove for the value
`x=0`.

2. When
`x=0`,
`b^(0)=1` and
`a*1=a`; this means that the graph of the function should cut in the axis
`y=a`, if this does not happen, the values of
`a` and
`b` are not the right ones.

3. Then, we conclude that the correct option is the Option A:

`y=a*b^(x)`

`y=-3*2^(0)`

`y=-3`

4. You can see that the function cut the y-axis at -3.