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Math Chapter 7 Vocab
Math Chapter 7 Vocabulary
Question | Answer |
---|---|
Graph | The point in the plane |
X-Axis | The horizontal line in a graph |
Y-Axis | The Vertical line in a graph |
Ordered Pair | The order in which the numbers occur tells which number goes with which variable. (4,7) is an ordered pair |
Abscissa | The first number in an ordered pair |
Ordinate | The second number in an ordered pair |
Coordinates | (4,7) are called coordinates of a plane |
Cartesian Coordinate System | The whole system, x-axis, y-axis, and points on a plane |
Quadrants | The four regions in a graph |
Scale | The numbers and arrows in a graph |
Solution/Solution set | A solution of an equation with two variables is an ordered pair that makes an equation a true statement |
Y-Intercept | The value of y when x is 0 |
X-Intercept | The Value of x when y is 0 |
Rise + Run | Is going from one point to another in a cartesian coordinate system, the run is the change in x and the rise is the change in y |
Slope | The slope of a line is the ratio |
Slope-Intercept Form | An equation of the form y=mx +b, where m and b are constants, is an slope-intercept form The constant m is the slope The constant b is the Y-Intercept |
Slope of horizontal vertical lines | Horizontal lines have 0 for a slope. Vertical lines do not have a slope |
Point-Slope form of a linear equation | An equation in the form y- y1 = m(x-x1) Is said to be in the point-slope form. THe slope is m, and a fixed point on the line is (x.y) the variables x and y stand for coordinates of a variable point on the line. |
Equation of Horizontal and Vertical Lines | If y = constant, the graph is a horizontal line If x = constant, the graph is a vertical line |
System of Equations | A system of equations is two or more equations with the same variables |
Solution of a System | A solution of a system of equations is n ordered pair that satisfies all the equation in the system |
Substitution | A method of solving a system of equations by solving one equation to get one of the variable sand substituting the result in the other equation |
Simultaneous Equations | Solve both equations at the same time |
Linear Combination | A method for solving a system of equations, A linear combination of two quantities is what you get by multiplying each quantity by a constant and adding the results. |