How to get answer by Mimiwhatsup:

Use the formula slope= y-y/x-x
-10-r/-2-8= 1/10
-10-r/-10= 1/10
Multiply the denominator (-10) on both sides
-10-r= -1
Add -10 to both sides
-r= 9
r= -9
Hope this helps!
Answer:
what does it mean? can you translate it
Do you have options to choose from?
Answer:
1/216 and 1/6 raised to the 3 power.