if the slop of the straight line passing through the two points A (4, k) , B (3, 2) is 5, find the value of K

Step-by-step explanation:

*The dashes are the fraction line*

To find slope...

difference between y

difference between x

2 - k

 =  5

3 - 4

3-4 = -1 so...

-1 ( 2 - k ) = 5

k - 2 = 5

k = 7

Hope this helps!

2.5 or 5/2

Step-by-step explanation:

Y2-Y1/X2-X1=m

(2-k)/(3-4)=5

(2-k)/-1=5

Multiply both sides by -1

(2-k)/2=-2.5

-k/-1=-2.5/-1

k=2.5 or 5/2

$254.8

Step-by-step explanation:

First:

455-20% = 364

364 - 30% = 254.8

Hope this helps :)