Question

How can you use the point-slope form of a line when only given two points?

Answer 1

Answer:

See below

Step-by-step explanation:

Point -slope form is:

• y - y1 = m(x - x1)

By having one set of coordinates and knowing the value of the slope (m in the equation) you can use the form.

How to find the slope?

Here you need 2 points: Point 1 with coordinates x1, y1 and point 2 with the coordinates x2, y2

Use the formula:

• m = (y2-y1)/(x2-x1)

Example:

• m = -5, and one of the points has coordinates (9, 2) then point-slope form is:

• y - 2 = -5(x - 9)