Q:
# What Is the Definition of "y Axis"?

**The y axis is typically the vertical axis in a two-dimensional coordinate system.** The y coordinate is measured along this axis. It is crossed by, or perpendicular to, the horizontal x axis.

Credit:
Ken Teegardin
CC-BY-2.0

The point at which the two axes join is the {0,0} point, with the first zero being the x coordinate and the second the y coordinate. In a three-dimensional coordinate system, the y axis is one of three axes, with the other two being the x axis and the z axis. Another name for the y axis is the axis of ordinates. The coordinate system that uses these axes is known as the Cartesian coordinate system.

Learn more about Algebra-
Q:
## How Do You Write an Ellipse in Standard Form?

A: The standard form equation of an ellipse is either (x^2/a^2) + (y^2/b^2) = 1 or (y^2/a^2) + (x^2/b^2) = 1, where "x" is the x value, "y" is the y value, "a... Full Answer >Filed Under: -
Q:
## What Is a Vertical Intercept?

A: A vertical intercept is a point where a line crosses the vertical axis, or y-axis, on the Cartesian coordinate plane. When evaluating a function, the verti... Full Answer >Filed Under: -
Q:
## What Is the Axis of Symmetry Formula?

A: Written in standard form, the axis of symmetry formula is x = -b/(2a). It is derived from the standard formula for a parabola of y = ax^2 + bx + c. A parab... Full Answer >Filed Under: -
Q:
## How Do You Solve Quadratic Inequalities?

A: To solve a quadratic inequality, find the coordinates where the graph crosses the x axis, and determine the direction for the parabola. Complete the parabo... Full Answer >Filed Under: