Answer :
Answer:
Yes the equation represents a direct proportion
Step-by-step explanation:
We are given the expression
[tex]y = 7.2x[/tex]------- expressing the relationship between y and x
one way to know if the expression shows a direct proportionality is to answer the question, does y increase if x increases?
let us plug two values for x and see what happens to y
for x=3
y=7.2(3)
y=21.6
for x=4
y=7.2(4)
y=28.8
for x= 2
y=7.2(2)
y=14.4
From our observations when x increases the value of y increases and vice versa, hence there exist a direct proportionality