domain

The coordinates of a point are called an ordered pair because the order of the two numbers is important. The first number in the ordered pair is the x coordinate. It describes the number of units to the left or right of the origin. The second number in the ordered pair is the y coordinate.

The center of the coordinate system (where the lines intersect) is called the origin. An ordered pair contains the coordinates of one point in the coordinate system. A point is named by its ordered pair of the form of (x, y). The first number corresponds to the x-coordinate and the second to the y-coordinate.

An ordered pair consists of two elements that are written in the fixed order. So, we define an ordered pair as: • The pair of elements that occur in particular order and are enclosed in brackets are called a set of ordered pairs.

How do you figure out if a relation is a function? You could set up the relation as a table of ordered pairs. Then, test to see if each element in the domain is matched with exactly one element in the range. If so, you have a function!

When you format ordered-pair answers, enclose all ordered-pair answer values in parentheses. Separate the coordinates in the ordered pair with a comma. Do not include spaces between the coordinates and the comma.

A system of nonlinear equations is a system of two or more equations in two or more variables containing at least one equation that is not linear. Recall that a linear equation can take the form A x + B y + C = 0 /displaystyle Ax+By+C=0 Ax+By+C=0. Any equation that cannot be written in this form in nonlinear.