Question

If (-3, y) lies on the graph of `y = 3^-x`, then what is y?

Answer 1

`color(blue)(y=27)`

Explanation:

We already know the value of `x` from the coordinate, `x=-3`.

The corresponding `y` value is just `x=-3` plugged into the function:

`y=3^(-(-3))=3^3=color(blue)(27)`

So `(-3,27)`