Sunday

September 21, 2014

September 21, 2014

Posted by **Lizzy** on Friday, October 5, 2007 at 6:28pm.

x^2 = 1 + y^2

This is a function because relations cannot be an equation right?

- Algebra answer for checking -
**Reiny**, Friday, October 5, 2007 at 7:28pmYour equation is NOT a function.

If you rearrange it to read : x^2 - y^2 = 1

you should recognize that it is a hyperbola.

Where did you get the idea a relation cannot be an equation?

All relations are equations.

All functions are relations, but only some relations are functions.

The simplest way to determine if a relation is a function is by means of the "vertical line test"

Visualize a vertical line scanning your graph from left to right. If the line cuts your graph in 2 or more points for a given x value, then it is NOT a function.

**Answer this Question**

**Related Questions**

Algebra (please help) - Which of the following relations has this characteristic...

math - Which of the following best describes the equation below? y= -7x + 6 ...

Discrete Math - Which of these relations on {0, 1, 2, 3} are equivalence ...

Math - Which of the following relations has this characteristic: The relation is...

algebra - Can someone help with inverse relations and functions? is relation t a...

algebra - Determine whether the following relation represents a function. If the...

Need help asap - I need help! Reasoning: Can a function have an infinite number ...

algebra - Explain the words relation and function. Include in your explanation ...

algebra - Let the set of ordered pairs (x, y)= {(1, 2), (2, 4), (1, 3), (3, 4)} ...

VERY URGENT MATH(Formalizing Relations & Functions - What is the domain of the ...