Homework Help: Pre-Calculus

Posted by Peter on Thursday, August 9, 2012 at 12:48am.

Determine whether the equation represents y as a function of x.

|y| = 4 - x

If I plug in 5, then I get -1, but it also means 1. Does that mean y has 2 values which means that it is not a function?

Pre-Calculus - drwls, Thursday, August 9, 2012 at 2:46am
You are correct.

There are two y's for each x. y is not a function of x.

Answer this Question

Related Questions

Pre-calculus - Find the critical point of the function y=-2(x-1)^2-3. Then, ...
Pre-calculus - Find the critical point of the function y=-2(x-1)^2-3. Then, ...
pre-calculus - Determine whether y is a function of x: x^2y-x^2+4y=0 Please help...
Pre Calculus 12 - Graphing trigonometric functions A sinusoidal function has a ...
calcius - Determine whether the relation represents a function. If it is a ...
Pre-Algebra - Okay so I have no clue how to determine if a relation is a ...
Algebra - 1. Determine whether the relation is a function. {(-2, -7), (3, -5), (...
Algebra - Explain how you would determine whether the graph of y = x^4 ...
MATH - State whether each equation in Exercises 25–30 represents a linear, ...
Pre Calc - Determine whether the relation is a function. [(-4,6),(-1,3),(3,3),(8...

For Further Reading

First Name:
School Subject:
Answer: