Answer:
vertex is (4,-3)
Step-by-step explanation:
Answer:
Option a - f(x)=20x
Step-by-step explanation:
Given : For a certain function f = f(x), we know that f is proportional to x and that the constant of proportionality is 20.
To Find : A formula for f ?
Solution :
We have given that,
f is proportional to x i.e.
This implies
Where, k is the proportionality constant
The constant of proportionality is 20.
So,
On comparing with, f = f(x)
Therefore, The formula of f is
So, Option a is correct.
D sorry if I am incorrect
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