Question

Math Whizzes I have freshman question-
On a coordinate plane, an exponential function decreases from quadrant 2 into quadrant 1 and approaches y = 0. It crosses the y-axis at (0, 4).
What is the initial value of the exponential function shown on the graph?

0
1
2
4

Answer 1

Answer:

4

Step-by-step explanation:

Exponential functions are written in the form  $f(x)=ab^x$

$a$ is the initial value of an exponential function and is found by substituting $x=0$ into the function as $b^0=1$

Therefore, as y = 4 when x = 0, the initial value is 4