# Pre-Algebra

Okay so I have no clue how to determine if a relation is a function.
Here is an example can you tell me how to determine this? D:

Example:
Determine whether the relation is a function. {(-5,5), (-2,5), (0,5), (2,5)}

1. 👍 0
2. 👎 0
3. 👁 31
1. a funcion has a one to one relationship.

here, for each x, it maps into a single distinct y. Each x here maps to a y.

Now, the reverse: is x a function of y? No, because for y=5, x can be -5, -2, 0, or 2. x is not a function of y.

What if you had added the point (-5,4)? Then y would not be a function of x, because if x=-5, it maps into both 4, and 5. Not a function then

1. 👍 0
2. 👎 0
2. Thanks

1. 👍 0
2. 👎 0
posted by Cheryl

## Similar Questions

1. ### Algebra

Identify the mapping diagram that represents the given relation and determine whether the relation is a function. {(–3, –6), (–1, –6), (5, –6), (8, –6)} It won't let me update the pictures, but I think it might be a

asked by tbell4ever on October 25, 2018
2. ### Pre-Calculus

Given that x is an integer, state the relation represented by absolute value y = x/2 and 0 is less than or equal to x which is less than or equal to 2 by listing a set of ordered pairs. Then state whether the relation is a

asked by Lucy on September 28, 2008
3. ### Need help asap

I need help! Reasoning: Can a function have an infinite number of values in its domain and only a finite number of values in its range? If so, describe a real-world situation that could be modeled by such a function. Writing: What

asked by Macie on January 9, 2014
4. ### DISCRETE MATH

We have a relation R on Z+ defined as follows: mRn if and only if m|n. a. Explain why the relation R is not a function. b. Determine the set A = {m ∈ Z|mR52} and give its cardinality |A|. c. Determine the set B = {n ∈ Z|52Rn}.

asked by Anonymous on May 31, 2015

I am having trouble trying to figure out how to work this problem: Determine if each relation is a function. 1. Relation: (-2,2),(3,2,),(4,-1),(5,-2) How do i do this???????

asked by NIki on March 2, 2010
6. ### algebra

Determine whether the following relation represents a function. If the relation is a function then state domain and range? {(-1,-6),(2,-6),(3,-6),(4,-6)} Does the given relation represents a function? What is domain?

asked by Sharday on May 22, 2013
7. ### Algebra

Find the range of the relation [(1, -4), (2,5), (3,5)]. Then determine whether the relation is a function.

asked by Megan on January 17, 2013
8. ### math

Which of the following best describes the equation below? y= -7x + 6 answers choices are: A. relation only B. neither a relation nor a function C. function only D. both a relation and a function

asked by Ayriana on February 27, 2014
9. ### Math

An angle θ satisfies the relation csc θ cos θ = -1. A) Use the definition of the reciprocal trigonometric ratios to express the left side in terms of sin θ and cos θ. B) What is the relation between sin θ and cos θ for this

asked by Henry on November 22, 2016
10. ### Math

True or False. 1. Every function is a relation. 2. When you switch the inputs and outputs of any function, the resulting relation is a function.

asked by AJ on February 3, 2018

More Similar Questions