Algebra I Recipe: Writing Equations in y = mx + b when Given the Slope and a Point on the Line
By G Redden
Steps
- Use point-slope form: y - k = m(x - h)
- Substitute the slope in place of "m."
- Substitue the x-coordinate of the ordered pair for "h."
- Substitute the y-corrdinate of the ordered pair for "k."
- Distribute the slope value.
- Add or substract "k" on both sides to isolate "y" and get y = mx + b.
1.
(2, 3) m = -1/2
2.
(-3, 4) m = 2/3
3.
(2, -3) m = 2
4.
(1, -3) m = -4
5.
(-2, 4) m = 0
6.
Practice Problems