MATH

2. There is no horizontal movement and hence the denominator is zero while calculating the slope. Thus, the slope of the line is undefined.
6. The vertical intercept of a graph is the point where the graph crosses the vertical axis. If the axis is labeled with the variable y, the vertical intercept is also called the y-intercept. Also, the term is sometimes used to mean just the y-coordinate of the point where the graph crosses the vertical axis. The vertical intercept of the graph of y = 3x - 5 is (0, -5), or just -5.
7. The slope of a line is the quotient of the vertical distance and the horizontal distance between any two points on the line.
8. how many units you move up or down from point to point. On the graph that would be a change in the y values. Run means how far left or right you move from point to point. On the graph, that would mean a change of x values.
9. two variables are negatively related; that is, when x increases, y decreases, and when x decreases, y increases.

1. two variables are positively related—that is, when x increases, so does y, and when x decreases, y decreases also.
3. A linear relationship is a relationship between two quantities where one quantity has a constant rate of change with respect to the other. The relationship is called linear because its graph is a line. A linear relationship can be represented by an equation of the form y = mx + b, where m and b are constants.
4. In a linear relationship between two quantities x and y, with equation y = mx + b, the constant m is the rate of change. It tells you how much y changes when x changes by 1. It is also the slope of the graph of the relationship.
5. A mathematical term used to describe a line that has a constant rise or run