Question

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

Answer 1

Answer:

$\displaystyle \frac{1}{9}$

Step-by-step 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, $a^-^n=\displaystyle \frac{1}{a^n}$:

$y=\displaystyle \frac{1}{3^2} \\\\y=\displaystyle \frac{1}{9}$

I hope this helps!

Answer 2

Answer:

y = 1/9

Step-by-step explanation:

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

y = 3^x

y = 3^(-2)

y = 1/9

Therefore y = 1/9