Question

Math check!

Answer 1

The table below shows the squares of different numbers:


Number
(x) 2 −2 3 −3
Square of the number
(y) 4 4 9 9

Answer 2

hint:
when I say \( y\) is a function of \(x\), I mean that \(y\) is the dependent variable, since its values depend on the values of \(x\)

Answer 3

Okay

Answer 4

furthermore, for one value of \(x\), the function \(y=x^2\) gives one and \(only\) one values of \(y\). That is why the relation represented by the table is a \(function\)

Answer 5

oops.. value* of \(y\)...

Answer 6

for Part B, you are right!

Answer 7

Okay, thank you!

Answer 8

:)

Answer 9

@agent0smith

Answer 10

Part A: Does the table represent y as a function of x? Justify your answer.

Answer: Yes the table represents Y as a function of X. Why?

Because as it is known. Y can be a independent for any value of X and Y.

Part B: The total cost f(x), in dollars, for renting a rowboat for x hours is shown below:

f(x) = 20 + 3x

What is the value of f(150), and what does f(150) represent?

Answer: The value is,
f(150) = 20 + 3(150) which equals 450.
Then, f(150) = 20+ 450 which then equals 470.
And f(150), represents what would be the cost in renting the boat for 150 hours.

Answer 11

Yes, it does. Because y= f(x) = x^2 and the value of y changes corresponding to the value of x. This is correct right?

Answer 12

I gotta go, tag me when I come back online.

Answer 13

okay :)

Answer 14

@welshfella

Answer 15

I'm not sure exactly what part of the question you need to be checked, but it looks fine.