Yes the graph is proportional
Answer:
, 
Step-by-step explanation:
Replace X with Y
solve for Y; X = Y^2 + 5
subtract 5 from both sides
X - 5 = Y^2
take the square root
Y = plus or minus sqrt(X-5)
sqrt(X-5); -sqrt(X-5)
9/4 = 2 1/4
1/4 = 0.25
2.25 is your answer
hope this helps
You have a good day and good luck on that question