answersLogoWhite

0

The graphical way is probably the simplest. Draw a graph of the equation. Hold a ruler parallel to the y axis and slide it from left to right. If, at any point, the ruler touches the graph at more than one point then you do not have a function.

User Avatar

Wiki User

13y ago

What else can I help you with?

Related Questions

X squared plus y squared equals 1 How do you determine whether the given equation y as a function of x?

To determine if the equation ( x^2 + y^2 = 1 ) can be expressed as ( y ) as a function of ( x ), you can solve for ( y ). Rearranging gives ( y^2 = 1 - x^2 ), leading to ( y = \pm \sqrt{1 - x^2} ). Since there are two values of ( y ) (one positive and one negative) for most values of ( x ) in the interval ([-1, 1]), ( y ) cannot be expressed as a single-valued function of ( x ). Thus, the equation does not define ( y ) as a function of ( x ).


How can you define when the Graph is Function or not?

If a graph is a function, it will always have y=... or x=... (or anoher letter equals an equation) for example y= 3x-12 is a function


How do you generate an arctan function from a set of data?

To generate an arctan function from a set of data, you will need to define the arctan. This function equation is as follows: arctan = (i/2) * log[(i+x) / (i-x)].


Determine the point at which the graph of the function has a horizontal tangent line for the equation?

For the equation (9x^2)/(x^2+4)


How do I determine the domain and the equation of the vertical asymptote with the equation f of x equals In parentheses x plus 2 end of parentheses minus 1?

The domain of the function f(x) = (x + 2)^-1 is whatever you choose it to be, except that the point x = -2 must be excluded. If the domain comes up to, or straddles the point x = -2 then that is the equation of the vertical asymptote. However, if you choose to define the domain as x > 0 (in R), then there is no vertical asymptote.


How do you determine a equation that is function?

If an equation is a function, then:The set of coordinates doesn't consists of the same first member. For instance, the set can't contain (1,2) and (1,1).There exists only a function within the specific interval. For instance, f(x) = x within -1 &le; x &le; 1 and x + 2 within 1 < x &le; 3. If f(x) = x and x + 2 within -1 &le; x &le; 1, then this doesn't make an equation the function.


Which equation is a function of x?

Any equation which maps each value of x in the domain to a value in the range is a function of x.


How can you determine the trend and the graph on alinear fuction?

To determine the trend of linear function graph or equation you would simply look at the slope of the line. This is represented by the m in the equation, f(x) = mx + b.


Does the equation x plus y equals 41 define y as a function of x?

Both. If you look at it like this: y=41-x you say x is independent and y is dependent of x (i.e. y is a function of x) For x=41-y you say y is independent and x is dependent of y (i.e. x is a function of y)


What is an example of a wrong function equation?

An example of a wrong function equation is f(x) = sqrt(x) for all non-negative x.


Do a linear equation and a function share the same definition?

No. A function need not be linear. For example, y = sin(x) is a function of x but it is not a linear equation.


How do you know if an equation is a function or not?

An equation is a function if it is in y=mx+b form or has a y= in foront of it. f(x) is a classic way of writing a function. Ex) X^2 is a function