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# (-2, -8) and (2, -6)

For each problem, use the two point formula to determine the equation of the line that passes through the two points given.

### 2 Answers by Expert Tutors

Sheila M. | Friendly College Math Professor - understands students' math anxietyFriendly College Math Professor - unders...
4.9 4.9 (63 lesson ratings) (63)
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Good morning, Jennifer.

The two-point formula is:
y - y1 = (y2 - y1)  (x - x1)
x2 - x1

If we let (x1, y1) be the ordered pair (-2, -8),
and we let (x2, y2) be the ordered pair (2, -6),
we will have:

y - (-8) = (-6 - (-8))  (x - (-2))
2 - (-2)

Using order of operations and careful calculations, you should arrive at an equation that is close to slope-intercept form (y = mx + b).  I will start this process for you, and hopefully you will arrive at the correct answer.

y + 8 = 2/4 (x + 2)
y + 8 = 1/2 (x + 2)

I'll leave the last couple steps up to you.

Robert J. | Certified High School AP Calculus and Physics TeacherCertified High School AP Calculus and Ph...
4.6 4.6 (13 lesson ratings) (13)
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slope = (-6+8)/(2+2) = 1/2

So, the equation in the point-slope form is

y + 2 = (1/2)(x + 8) <=Answer