The sum of john’s and matt’s ages is 42. the difference of their ages is 6. if matt is older than john, what are their ages? matt is 16 and john is 20. matt is 30 and john is 14. matt is 24 and john is 18.

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.