Find expert advice and community support for all your questions on IDNLearn.com. Find the answers you need quickly and accurately with help from our knowledgeable and dedicated community members.

Consider the following sets.

[tex]\[ U = \{ \text{ordered pairs on a coordinate plane} \} \][/tex]
[tex]\[ A = \{ \text{ordered pair solutions to } y = x \} \][/tex]
[tex]\[ B = \{ \text{ordered pair solutions to } y = 2x \} \][/tex]

Which ordered pair satisfies [tex]\( A \cap B \)[/tex]?

A. (0,0)
B. (1,1)
C. (1,2)
D. (2,1)


Sagot :

To solve this problem, we need to identify the point(s) of intersection between the sets [tex]\(A\)[/tex] and [tex]\(B\)[/tex].

1. Define the sets:
- Set [tex]\(A\)[/tex]: This set contains all the ordered pairs [tex]\((x, y)\)[/tex] such that [tex]\(y = x\)[/tex].
- Set [tex]\(B\)[/tex]: This set contains all the ordered pairs [tex]\((x, y)\)[/tex] such that [tex]\(y = 2x\)[/tex].

2. Intersection of sets [tex]\(A\)[/tex] and [tex]\(B\)[/tex]:
- [tex]\(A \cap B\)[/tex] includes the ordered pairs that satisfy both [tex]\(y = x\)[/tex] and [tex]\(y = 2x\)[/tex].

3. Find the common solutions:
- For a pair [tex]\((x, y)\)[/tex] to be in both [tex]\(A\)[/tex] and [tex]\(B\)[/tex], the following must be true simultaneously:
[tex]\[ y = x \][/tex]
[tex]\[ y = 2x \][/tex]

4. Solve the system of equations:
- Substitute [tex]\(y = x\)[/tex] into [tex]\(y = 2x\)[/tex]:
[tex]\[ x = 2x \][/tex]
- Solve for [tex]\(x\)[/tex]:
[tex]\[ x - 2x = 0 \implies -x = 0 \implies x = 0 \][/tex]

5. Determine y:
- Substitute [tex]\(x = 0\)[/tex] back into [tex]\(y = x\)[/tex]:
[tex]\[ y = 0 \][/tex]

6. Identify the ordered pair:
- The ordered pair that satisfies both equations is [tex]\((0, 0)\)[/tex].

Therefore, the ordered pair that satisfies [tex]\(A \cap B\)[/tex] is [tex]\((0, 0)\)[/tex].
We appreciate your contributions to this forum. Don't forget to check back for the latest answers. Keep asking, answering, and sharing useful information. IDNLearn.com is committed to providing the best answers. Thank you for visiting, and see you next time for more solutions.