### Concept (1)

If given a line and its graph, we can find the slope easily and quickly. Finding the slope of a line from a graph is one of the simplest ways to calculate slope. One must remember when finding the slope of a line that a downhill line has a negative slope, and an uphill line has a positive slope. Also important in an understanding of the definition of slope and interpreting graphs.

### Sample Problems (7)

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Find the slope of the line.

###### Problem 1
How to find the slope of a line if given a graph and the slope is fractional.

Find the slope of the line.

###### Problem 2
How to find the slope of a line if given a graph of the line.

Find the slope of the lines.

Line 1:
Line 2:
###### Problem 3
How to find the slope from graphs of vertical and horizontal lines.
###### Problem 4
Finding the slope of a line from a graph
###### Problem 5
Writing equations for vertical and horizontal lines and finding their slopes
###### Problem 6
Finding the slope of a line from a graph, including word problems and interpreting the slope units
###### Problem 7
Writing the slope of vertical and horizontal lines from a graph