Can a triangle of 72/12 fit on the same line as 144/24
1 answer:
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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:
4 and 12
Step-by-step explanation:
Given
f(x) = 4 , then
f(0) = 4 = 4 × 1 = 4 [
= 1 ]
f(1) = 4 = 4 × 3 = 12