Answer:
y =
x²
Step-by-step explanation:
Given that y and x² are directly proportional then the equation relating them is
y = kx² ← k is the constant of proportion
When x = 2
y = k × 2² = 4k
When x = 5
y = k × 5² = 25k
Then
25k - 4k = 20 ( difference between values is 20 )
21k = 20 ( divide both sides by 21 )
k = 
y =
x² ← equation of proportion
Answer:
125
Step-by-step explanation:
Multiplies by -5
-5*-1=5
5*-5=-25
-25*-5=125
Answer:
the answer is 24x..
Step-by-step explanation:
you just have to add the numbers ....
Answer: the value of a is less than b because its to the left
Step-by-step explanation: