Pre Algebra Slopes and Equation of a Line
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What is the equation of a horizontal line?
An equation of the horizontal line through (a,b) is y=b. The slope of a horizontal line is 0
What is the slope-intercept form of the equation of a line?
An equation of the line that has slope m and y-intercept b is y=mx+b
What is the equation of a vertical line?
An equation of the vertical line through (a,b) is x=a. The slope of a vertical line is undefined.
What is the slope of a line
Slope = Rise/Run
How do we use slope as a rate of change?
When a line is used to model the relationship between two quantities, the slope of the line is the rate of change of one quantity with respect to the other.