### Concept (1)

If given the equation of a line, or two points on the line we can try to find the slope of a line from two points. This is often the most efficient way to calculate slope, and can be done with a simple formula to find rise over run. Finding the slope of a line from two points requires us to know the definition of slope. and how to plot points.

### Sample Problems (9)

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Find the slope of the line that contains the points (-3,2) and (4,1).

###### Problem 1
How to find the slope if you're given 2 points and no graph.

Find the value of y if the slope of the line that contains (2,3) and (4,y) is 5⁄2.

###### Problem 2
How to find the slope if you're given 2 points, but one contains a missing value.

Find the slope of the line that contains (-3,4) and (2,4).

###### Problem 3
How to find the slope of a horizontal line using 2 points.

Find the slope of the line that contains (2,-1) and (2,3).

###### Problem 4
How to find the slope of a vertical line using 2 points.
###### Problem 5
Calculating a fractional slope of a line from two points
###### Problem 6
Finding the integer slope of a line through two given points
###### Problem 7
Finding the slope of a line through two points that have fractional coordinates
###### Problem 8
Finding the slopes of vertical and horizontal lines from two points
###### Problem 9
Finding the slope of a linear relationship presented in a word problem or a table of values