3 years ago

Is this relation a function? (PLEASE ANSWER!) last time i was ignored

Mathematics

1 answer:

ANTONII [103]3 years ago

3 0

No it is not, because the value 3 in the domain is repeating, therefore it is not a function

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sladkih [1.3K]

Answer:

y=90 when x=4

Step-by-step explanation:

We are given that

$y\propto (x+2)^2$

When x=8 and y=250

We have to find the value of y when x=4

$y=k(x+2)^2$

Where k= Proportionality constant

Substitute the values

$250=k(8+2)^2$

$250=100k$

$k=\frac{250}{100}$

$k=5/2$

Now, substitute x=4 and k=5/2

Then, we get

$y=\frac{5}{2}(4+2)^2$

$y=\frac{5}{2}\times 36$

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