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Yes, y =5 is a constant function. Meaning that for any value of x (in the domain), the value of the function (y) is 5. The graph would be a horizontal line five units above, but parallel to, the x-axis. Another answer: The above comments are only valid if we specify that x is just some constant. In general, however, when we refer to the function y=f(x)=x we do not mean a constant function, but rather a diagonal line running through the origin. The function would be a constant function if it were y=f(x)=c for some c, but normally when we write y=x we mean that the value of y is the value of x, and hence y changes as x changes.
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Is x equals y a function?
y = x This is a line and a function. Function values are y values.
How do you know that y is a function of x?
If you plug in y for the x function, and it equals the answer you got, it is right.
Is y equals -x plus 2 a linear function?
Yes, y=-2+x is a linear function.
Does y vary directly as x in this function y equals x plus 2?
No.
Is x-y equals 5 a function and how?
X - Y = 5 - Y = - X + 5 Y = X - 5 ==========Now it is a function because it passes the vertical line test.
The function y equals sin θ is not a function beacause sin 30 equals sin 150?
Y=sin X is a function because for each value of X, there is exactly one Y value.
What is the inverse of y equals x?
The inverse of the function y = x is denoted as y = x. The inverse function essentially swaps the roles of x and y, so the inverse of y = x is x = y. In other words, the inverse function of y = x is the function x = y.
If Sin equals x and Cos equals y then x squared equals what function of y?
If x = sin θ and y = cos θ then: sin² θ + cos² θ = 1 → x² + y² = 1 → x² = 1 - y²
What type of function is represented by the equation y equals -2lxl?
y - |x| is an expression, not a function.
Is y equals x2 a function?
Y=X^2 is a function for it forms a parabola on a graph.
What is the range of the function y equals x?
The function y=x is a straight line. The range is all real numbers.
Is this equation a function -x plus y equals -4?
Yes it is a function. In standard form it is y=x-4.
