Q: What is the function of y axis?

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y-axis

One intercept of the y-axis and infinitely many of the x-axis.

It is the y intercept

An even function is symmetric about the y-axis. The graph to the left of the y-axis can be reflected onto the graph to the right. An odd function is anti-symmetric about the origin. The graph to the left of the y-axis must be reflected in the y-axis as well as in the x-axis (either one can be done first).

They are at (0, y) on the Cartesian plane where y is the vertical y axis. For any function you would have to solve the function for the value of y when x is zero - and then the coordinates would be (0,y) For the x (horizontal) axis, which is equivalent to the function y = 0, they would be (0,0), i.e. when x is zero, y is zero.

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In most cases, yes, the y-axis represents the dependent variable in a graph or chart. This variable is typically influenced or affected by changes in another variable represented on the x-axis.

y-axis

One intercept of the y-axis and infinitely many of the x-axis.

When a function is graphed, the dependent variable is usually measured along the y-axis. This is because y is the function of x.

When a function is graphed, the dependent variable is usually measured along the y-axis. This is because y is the function of x.

It is the y intercept

An even function is symmetric about the y-axis. The graph to the left of the y-axis can be reflected onto the graph to the right. An odd function is anti-symmetric about the origin. The graph to the left of the y-axis must be reflected in the y-axis as well as in the x-axis (either one can be done first).

They are at (0, y) on the Cartesian plane where y is the vertical y axis. For any function you would have to solve the function for the value of y when x is zero - and then the coordinates would be (0,y) For the x (horizontal) axis, which is equivalent to the function y = 0, they would be (0,0), i.e. when x is zero, y is zero.

All y-values in the function are multiplied by -1. This function is 'flipped' over the x-axis.

is shows the point where a graph crosses the y-axis

Reflection about the y-axis.

No. It depends on the function f.