Slopes of parallel and perpendicular lines
Learn with an example
Line e has a slope of -9/7. line f is perpendicular to e.
what is the slope of line f?
Line f is perpendicular to line e, so its slope is the opposite reciprocal. Find the opposite reciprocal.
-9/7 —–>Take the slope of line e
-7/9 ——> Find the reciprocal
7/9 ——-> Find the opposite
| The slope of line f is 7/9 |
Line u has a slope of 5/9. Line v is parallel to line u.
What is the slope of line v?
Line v is parallel to u, so its slope is the same.
The slope of line v is 5/9.
Line u has a lope of 6/5. Line v is parallel to line u.
What is the slope of line v?
Line v is parallel to u, so its slope is the same.
The slope of line v is 6/5.
Let’s practice:
