Answer:
[tex](0,-1)[/tex]
Step-by-step explanation:
The y-intercept always occurs when [tex]x=0[/tex]. To find the y-value of the y-intercept, substitute [tex]x=0[/tex] into your equation:
Given [tex]f(x)=-4.2^x[/tex], when [tex]x=0[/tex]:
[tex]f(x)=-4.2^0,\\f(x)=-(1)=-1[/tex]
- Recall that [tex]n^0=1[/tex] for [tex]n\in \mathbb{R}[/tex]
Therefore, the y-intercept of this function is [tex](0, -1)[/tex].
