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# Chapter 2 vocab math

TermDefinition
Ordered Pairs A pair of numbers (x,y) used to locate a point In a coordinate plane. The first number is the x-coordinate.
Coordinate plane A coordinate plane is formed by the intersection of a horizontal number line, usually called the x-axis, and a vertical number line, usually called the y-axis.
x-axis The horizontal number line in a coordinate plane.
y-axis The vertical number line in a coordinate plane.
x-coordinate The first coordinate in an ordered pair, which indicates how many units to move to the left or right.
y-coordinate The second coordinate in an ordered pair, which indicates how many units to move up or down.
Linear equation An equation whose graph is a line.
Solution of a linear equation A value that makes an equation true.
Slope A ratio of the change in y (the rise) to the change in x (the run) between any two points on a line. It is a measure of the steepness of a line.
Rise The change in y between two points on a line.
Run The change in x between two points on a line.
Slope - intercept form A linear function written in the form y mx b = +. The slope of the line is m and the y-intercept of the line is b.
x-intercept The y-coordinate of the point where a line crosses the y-axis.
y-intercept The x-coordinate of the point where a line crosses the x-axis.
Standard form Standard form is a way to write numbers using the digits 0-9.
Systems of linear equations any equation such that the sum of two solutions is a solution, and a constant multiple of a solution is a solution.
Solution of a system of linear equations the solution set is the intersection of these lines, and is hence either a line, a single point, or the empty set.
Created by: Ginger_Powder

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