Question

which expotential function has a y-intercept of (0, -4)?



HELP WILL MARK BRAINLIEST

Answer 1

Answer:

$y=2^x-5$

Step-by-step explanation:

The y-intercept occurs when x = 0.

Therefore, substitute x = 0 into each equation to find its y-intercept.

$\begin{aligned}\implies y&=(-4)^0\\&=1\end{aligned}$

$\begin{aligned}\implies y&=2^0-5\\&=1-5\\&=-4\end{aligned}$

$\begin{aligned}\implies y&=3^0+4\\&=1+4\\&=5\end{aligned}$

$\begin{aligned}\implies y&=(0)^{-4}\\&=0\end{aligned}$

Therefore, the exponential function that has a y-intercept of (0, -4) is:

$\large\boxed{y=2^x-5}$