IS THIS A FUNCTION AND WHICH ONE?! VEIW PICTURE

A and B are functions but C is not

Step-by-step explanation:

a  function has one y value to every x value.

options a,b,c are the right answer.

step-by-step explanation:

a linear parent function is always represented as y = x

if we write this function in the form of y=mx+c

⇒

or  

now if we plot a graph we will find these characteristics:

1) y intercept of the graph is zero so its a straight line passing through origin.

2) as we can see in both the forms of function written, values of x and y may be either positive or negative for the positive slope means points on the graph are either in first quadrant or in third one.

3) it's slope is one.

51

step-by-step explanation:

73-22=51 the   mass number minus the amount of protons gives you the amount of neutrons