The y intercept is the y value when x = 0. All you have to do is run up the y axis until you see where the blue line intersects the y axis. In this case it is 4.
The y intercept is (0,4)
First oval is a domain, second oval is a range.
To be a function, only one arrow should be from each number in domain,
but we have two arrows from number 6 and two arrows from the number 12. So, it is not a function.
false because,the x is repeating x.their are 2 arrows are pointing to the same number.
how to tell if it is not a function
1)if x intercept is pointing to two numbers it is not a function
example:6 it is pointing at 2 and 4 so it would not be a function