Yes they are , since they are very common in ones body
Answer:
The y-intercept is 4
Step-by-step explanation:
You find the y-intercept by finding where x is zero. In the table, when x=0 the y=4. The y-intercept is 4. The graph of the function crosses the x-axis at the point (0,4).
Step-by-step explanation:

A enlargement
b 2
hope this helps! good luck!