All categories

3 years ago

How easily can you determine if a relation is a function?

1 answer:

8 0

Finally, a math question I can solve! You can determine if a relation is a function if you first understand what a relation is: A collection of ordered pairs.

Example:
(4,2),(2,2),(12,0), (9,1) etc.
Ordered pairs consist of input (x) values and output (y) values. In the example (4,2), four would be the x or input value. 2 would be the y or output value.

Once you understand that, all you need to do is look at YOUR specific relation. Look at all the x values in your relation. Are there two of the same input values? If this is the case, your relation is NOT a function. That's how easy it is :)

You might be interested in

What 3 numbers when multiplied, equals to 4,000? Please help! Will give Brainliest!

vlada-n [284]

Answer:

you can do (500)(4) x 2

Step-by-step explanation:

500 x 4 = 2000

2000(2) = 4000

7 0

3 years ago

Read 2 more answers

The sum of n and the sum of 8 and 6

kozerog [31]

Answer:

n + 14

I don't know if it's correct but i'm trying to help :)

3 0

4 years ago

Statements that are true for a cylinder with radius r and height h.

vampirchik [111]

Answer:

Only the second and third statements are correct:

Doubling r quadruples the volume.

Doubling h doubles the volume.

Step-by-step explanation:

The volume of a cylinder is given by:

$\displaystyle V=\pi r^2h$

We can go through each statement and examine its validity.

Statement 1)

If the radius is doubled, our new radius is now 2r. Hence, our volume is:

$\displaystyle V=\pi (2r)^2h=4\pi r^2h$

So, compared to the old volume, the new volume is quadrupled the original volume.

Statement 1 is not correct.

Statement 2)

Using the previous reasonsing, Statement 2 is correct.

Statement 3)

If the height is doubled, our new height is now 2h. Hence, our volume is:

$V=\pi r^2(2h)=2\pi r^2h$

So, compared to the old volume, the new volume has been doubled.

Statement 3 is correct.

Statement 4)

Statement 4 is not correct using the previous reasonsing.

Statement 5)

Doubling the radius results in 2r and doubling the height results in 2h. Hence, the new volume is:

$V=\pi (2r)^2(2h)=\pi (4r^2)(2h)=8\pi r^2h$

So, compared to the old volume, the new volume is increased by eight-fold.

Statement 5 is not correct.

7 0

3 years ago

Please help! It’s due soon!

o-na [289]

vertex (1,-1) axis of symmetry is x=1, domain all real numbers (i think neg ys) range y is less equal than -1, y increases as x less 0 bug IMO x decreases

3 0

3 years ago

X/5+37= -3 what is x show work

kvv77 [185]

I hope this help you

5 0

3 years ago