For this case we must write in algebraic symbology the expression described above:
We have an equation, then:
- x squared plus y squared:

- minus 2x plus 7y plus 1:

- equals zero:

We construct the equation:

Answer:

12 and 14 are not functions cause they fail the horizontal line test!
Theres an infinite amount of numbers because you could have 0.10123 to 0.19998298 its never ending
If in a fraction, the numerator or the denominator or both are fractions, then it is called a complex fraction.
Example 1:

Here, since the numerator is a fraction, it is a complex fraction.
Example 2:

Here, since the numerator and the denominator are fractions, it is a complex fraction.
Answer:
x = 2 1/ 2 , − 1 1/2
Step-by-step explanation: