Mike pays $20 per hour algebra tutoring. identify the constant of proportionality that relates his tutoring charges (y) to the number of hours (x) he meets with his tutor.
a) x
b) y
c) $20
d) x + y

a constant is a variable that never changes. You can change the number of times you meet with a tutor and you can change how many hours you have with the tutor, but you can't change how much they pay. Therefore the answer is C $20. Step-by-step explanation:

the answer

b. they are parallel and will never intersect.