Use the given to answer the following is the graph a functio

Use the given to answer the following is the graph a function? Why or Why not? What is the domain? What is the range? What are the zeros? If f(x)=3, what point(s) are on the graph?

Solution

b) Domain - here domain is all real numbers , as the domain is shown by the x - values and it is going to infinity in both sides of x , so ALL REAL NUMBERS or (- infinity , + infinity)

c)Range- for range we see the y values , So range is [-3, infinity)

d)The zeros are those values of x where the value of function is zero.

So , x=0.5 and x=4

e) by seeing at the graph we get

f(x) = 3

at x= -1 and x=-3.