# Vertical Line Test

The Vertical Line Test is a fundamental concept in mathematics, particularly in the study of functions and relations. It serves as a method to determine whether a given curve represents a function or not. By visually examining whether any vertical line intersects the curve at more than one point, one can ascertain whether the corresponding relation is a function. This test is indispensable in various mathematical applications, aiding in the analysis and classification of functions, thus forming a cornerstone in understanding the behavior and properties of mathematical models.

Questions

- Is the equation #y=x^2 +3# a function?
- Is the relation #{(0, 3), (0, -2), (0, 1)}# a function?
- Is {(5, –4), (3, –4), (–5, 3), (–4, 5)} a function?
- Does a vertical line pass the vertical line test?
- What is the vertical and horizontal line tests for 1-1 function?
- When is a relation a function?
- How do you use the vertical line test to show #x^2=xy-1# is a function?
- Is the relation #{(4, 2), (5, 2), (6, 2)}# a function?
- What is an example of a graph that fails the vertical line test?
- Is (3,4),(5,4),(1,3),(4,1),(9,4) a function?
- How do you use the vertical line test?
- How do you use the vertical line test to show #sqrt(x^2-4)-y=0# is a function?
- How do you use the vertical line test to show #y=3- sqrt(x+2)# is a function?
- Why does the vertical line test work?
- Is #f(x) =x^4sqrt(5-x)# a function?
- How do you use the vertical line test to show #x-y^2=0# is a function?
- Is #y=x^2 + 3x - 15# a function?
- Is (-4,1), (1,8), (-4,-2) a function?
- Is #f(x) = 2 - 2/x^6# a function?
- How do you evaluate #1- 7( 6v + 1) \leq - 258#?