What is the distance between points a and b?
a
b
8
7
6
5
4
-3
-2
-1
0
1
2
3
4
5
6
7
8
0
-6 units
-1 units
5 units
6 units

20

step-by-step explanation:

is there supposed to be a picture here?

secant-secant formula:

(whole secant) x (external part) =           (whole secant) x (external part)

(8+y-2) *8=                                           (y+4+6) *6

(y+6)*8 = (y+10) *6

distribute

8y+48 = 6y +60

subtract 6y from each side

2y +48 = 60

subtract 48 from each side

2y = 12

divide by 2

y = 6

sv =     (y+4+6)

sv   = 6+4+6

sv = 16