Answer:
see the explanation
Step-by-step explanation:
we know that
The y-intercept is the value of the function when the value of x is equal to zero. Also is called the initial value of the function
I will analyze two cases
Part 1) we have
[tex]f(x)=-3x[/tex]
so
For x=0
substitute
[tex]f(0)=-3(0)=0[/tex]
therefore
The y-intercept is the point (0,0)
Part 2) we have
[tex]f(x)=-3^x[/tex]
so
For x=0
substitute
[tex]f(0)=-3^0=-1[/tex]
therefore
The y-intercept is the point (0,-1)
