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# Ch 7 Math Vocab

Equations of Horizontal and Vertical Lines If y= constant, the graph is a horizontal line If x= constant, the graph is a vertical line
Solution, Equation Containing two Variables When an equation with two variables is an ordered pair that makes the equation a TRUE statement
Substitution A method of solving a system of equations by solving one equation to get one of the variables and substituting the result in the other equation
X- axis and Y- axis The two number lines
Ordered Pair (number, number)
Slope The ratio of a line rise ---- run
System of Equations two or more equations with the same variables
Linear Combination or Addition- Subtraction The result after multiplying two quantities by a constant, then adding the results
Scale Putting a number every 5 units on the two axes
Graph The point on the plane
Quadrants The axes divide the graph paper into four regions
Slope of Horizontal Lines 0
Slope of Vertical Lines No slope
Abscissa The first number in an ordered pair
Point - Slope form of a Linear Equation An equation in the form y-y1=m(x-x1) The slope is m, and a fixed point on the other line is (x,y). The variables x and y stand for coordinates of a variable on the line
Y-Intercept The value of y when x is 0
X-Intercept The value of x when y is 0
Slope- Intercept Form An equation of the form y=mx+b, where m and b are constants -The constant m is the slope -The constant b is the y-intercept
Solution of a System An ordered pair that satisfies ALL the equations in the system
Solution Set The set of all solutions to an equation
Coordinates To gather the two numbers (number,number) which create a point in a plane
Cartesian Coordinate System The whole system- x-axis, y-axis, points on the plane; named after Rene Descartes
Run The change in x when going from one point to another on the Cartesian Coordinate System
Rise The change in y when going from one point to another on the Cartesian Coordinate System
Ordinate The second number in an ordered pair
Simultaneous Equations Equations in a system that can be solved at the same time
Created by: mthibault