Slope-Intercept Form: Y = MX + B
For linear equations (straight lines), the slope can be seen by the steepness of the line. The slope is represented by the letter "M". The y-intercept is the place where the line crosses the y-axis. The y-intercept is represented by the letter "B".
When looking at a graph:
The slope can be found by choosing any two points on the line and counting the rise and the run. Reduce if necessary. M = rise/run.
The y-intercept can easily be found by looking at the point where the line crosses the y-axis (vertical axis).
In a table:
The slope can be found with the formula M = y2-y1/x2-x1
The y-intercept can be found by identifying Y, when X equals zero.
In a verbal description:
The slope can be found by keywords: "per", "each", or "every"
The y-intercept represents where we begin at the start of a problem (usually an initial fee) that is not dependent on the X variable.
For linear equations (straight lines), the slope can be seen by the steepness of the line. The slope is represented by the letter "M". The y-intercept is the place where the line crosses the y-axis. The y-intercept is represented by the letter "B".
When looking at a graph:
The slope can be found by choosing any two points on the line and counting the rise and the run. Reduce if necessary. M = rise/run.
The y-intercept can easily be found by looking at the point where the line crosses the y-axis (vertical axis).
In a table:
The slope can be found with the formula M = y2-y1/x2-x1
The y-intercept can be found by identifying Y, when X equals zero.
In a verbal description:
The slope can be found by keywords: "per", "each", or "every"
The y-intercept represents where we begin at the start of a problem (usually an initial fee) that is not dependent on the X variable.
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