Question

If A is (-4,3) and B is (-6,-5) what is the length of AB, the slope of it and the midpoint?

Answer 1

length
\[\sqrt{(x-x)^2+(y-y)^2}\]

slope
\[\frac{ y2-y1 }{ x2-x1 }=m\]

mid point

add the x's and divide by 2, add the y's and divide by 2

Answer 2

Do you agree that the length is 4 root 13, the slope is 8/9 and the midpoint is (1,-1)?

Answer 3

or is the slope negative 2/5?

Answer 4

\[\sqrt{(-4- - 6)^2+(3- -5)^2}\]
\[\sqrt{(2)^2+(8)^2}\]

Answer 5

\[\sqrt{68}\]

Answer 6

so 2 root 17 for the length?

Answer 7

slope
-5 -3 -8
----- = --- = 4
-6 - - 4 -2

Answer 8

right 2 root 17

Answer 9

what about the midpoint?

Answer 10

mid point
-4 3
-6 -5
------
-10 -2
-- --
2 2

-5, -1 mp

Answer 11

Thank you very much Jim, I appreciate all the help

Answer 12

yw