Question

If (-2, y) lies on the graph of y = 3Y, then y =

Answer 1

Answer:

y = 1/9

Explanation:

(-2, y) = (x, y)

y = 3^x

y = 3^(-2)

y = 1/9

Therefore y = 1/9

Answer 2

`\displaystyle (1)/(9)`

Explanation:

Hi there!

This question is asking us what the value of y is when x is -2, hence the point (-2,y).

`y=3^x`

To find y, replace x in the equation with -2 and evaluate:

`y=3^-^2`

When
`a^-^n` where n>0,
`a^-^n=\displaystyle (1)/(a^n)`:

`y=\displaystyle (1)/(3^2) \\\\y=\displaystyle (1)/(9)`

I hope this helps!