Find the slope from two points
key notes:
Slope = change in y / change in x
Learn with an example
Find the slope of the line that passes through (9, 4) and (2, 2).
Plug (9, 4) and (2, 2) into the slope formula.
Slope = change in y / change in x
= 2-4 / 2-9
= -2/-7
= 2/7
The slope is 2/7 .
Find the slope of the line that passes through (4, 3) and (6, 4).
Plug (4, 3) and (6, 4) into the slope formula.
Slope =change in y / change in x
= 4-3 / 6-4
= 1/2
The slope is 1/2
Find the slope of the line that passes through (2, 5) and (8, 4).
Simplify your answer and write it as a proper fraction, improper fraction, or integer.
Plug (2, 5) and (8, 4) into the slope formula.
slope = change in y / change in x
= 4 – 5 / 8 – 2 Plug in (2, 5) and (8, 4)
= -1 / 6 Subtract
The slope is -1 / 6 .
Let’s Practice!
