Exponential Functions

 $y\ =\ 5\left(\frac{1}{3}\right)^x$  What's the y-intercept and does this show growth or decay?

• 5, growth

• 5, decay 

•  $\frac{1}{3}$  growth

•  $\frac{1}{3}$  decay

 $y\ =\ -2\left(8\right)^x$   What's the y-intercept and does this show growth or decay?

• -2, growth

• -2, decay

• 8, growth

• 8, decay

Where's the horizontal asymptote?

• x = 0

• y = 0

• x = 1

• y = 1

What's the DOMAIN for this exponential graph?

• y > 0

• y < 0

• All real numbers

What's the RANGE for this exponential graph?

• y > 0

• y < 0

• All real numbers

What's the RANGE of this exponential graph?

• y > 0

• y < 0

• All real numbers

 $y=-4\left(7\right)^x$  What's the y-intercept and does this equation show growth or decay?

• (0, -4)  growth

• (0, -4)  decay

• (0, 7)  growth

• (0, 7)  decay

 $y=\frac{1}{2}\left(\frac{1}{4}\right)^x$  What's the y-intercept and does this equation show growth or decay?

•  $\frac{1}{2}$  growth

•  $\frac{1}{2}$  decay

•  $\frac{1}{4}$  growth

•  $\frac{1}{4}$  decay

 $y=-2\left(3\right)^x$  

Find the graph that goes with this equation.  Use Desmos or your calculator to graph out the equation.

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 $y=3\left(\frac{1}{2}\right)^x$  
Find the graph that goes with this equation.  Use Desmos or your calculator to graph out the equation.

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