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| a number that is multiplied by a variable in an equation or expression. In a linear equation of the form y = mx + b, the number m is the coefficient of x as well as the slope of the line. In y = 3x + 5, the coefficient is 3. |
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| a number in an equation that is not multiplied by a variable or an amount added to or subtracted from the terms involving variables. |
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| A pair of numbers of the form (x, y) that gives the locations of a point in the coordinate plane. |
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| A relationship between two variables in which the value of one variable depends on the value of the other variable. |
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| Lines that cross or intersect. The coordinates of the point where the lines intersect are solutions to the equations for both lines. |
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| A relationship between two variables in which the value of one variable depends on the value of the other variable. |
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| a relationship in which there is a constant rate of change between two variables |
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| The point where the x and y axes intersect on a coordinate graph. With coordinates (0,0) the origin is the center of the coordinate plane. |
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| The point where two lines intersect. If the lines are represented on a coordinate grid, the coordinates for the point of intersection can be read from the graph. |
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for all real numbers, a, b, and c:
Addition: If a = b, then a + c = b + c
Subtraction: If a = , then a – c = b – c
Multiplication: If a = b, then a ● c = b ● c
Division: if a = b and c ≠ 0 then a/c = b/c |
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| the vertical change between two points on a graph. The slope of a line is the rise divided by the run. |
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| the horizontal change between two points on a graph. The slope of a line is the rise divided by the run. |
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| The distance between two consecutive tick marks on the x and y axes of a coordinate grid. |
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| The number that expresses the steepness of a line. The slope is the ratio of the vertical change to the horizontal change between any two points on the line. |
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the point where a graph crosses the x- axis. The x-intercept of the equation
y = 3x + 5 is (-5/3, 0) or -5/3. |
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the point where the graph crosses the y-axis. In a linear equation of the form y = mx + b, the y-intercept is the constant, b. In the graph y = ex + 5, the y intercept is
(0 , 5) or 5. |
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