Question

What is the domain of the parabola?

Answer 1

Can someone explain to me how to get this? I WANT TO LEARN. DO NOT GIVE ME THE ANSWER PLZ

Answer 2

@cj49

Answer 3

Domain is/are the points on/along the x-axis. The x-axis is horizontal, so writing the equation for the domain will look like this:
\[\left\{ ? \le x \le ? \right\}\]
The ? represents the numbers/points the parabola goes through the x-axis.
So far so good?

Answer 4

hmmm. yea go on.

Answer 5

@vampirediaries

Answer 6

The points the parabola goes between 0 and 3 but not actually going through those points. 0.25 & 3.75
The points above are now your job to write in the \[\left\{ ?\le x \le ? \right\}\]

Answer 7

The domain of a function is the set of all accepted values of x.

Here, we have the graph and are asked about the domain.

Is there any reason to assume any value of x in the set of real numbers is excluded?


>> The x-axis is horizontal, NOT correct @vampirediaries

Answer 8

so..... {0.25<x<3.75}?

Answer 9

ohhhh. of course

Answer 10

No, you have been mislead.

Answer 11

so how do i do it @Directrix ???

Answer 12

My first step is to look along the x-axis and try to find an x that has no y on the given graph. If I do not see any such x values, then I say that the domain is the set of real numbers.

Answer 13

ohhhhh thank you! <3 Ill fan and medal!

Answer 14

You are welcome.

Answer 15

Could you help with a few more? Ill post them in a different page