10 is letter b. I hope this helps!!!
Answer:
Full explanation of what?
Y=2x is an equation that passes through those points
Answer:
-50
Step-by-step explanation:
-71 + 21
-50
The 21 is positive so we subtract it off like when we do 1 - 1. The second 1 is negative to the first 1 who is positive.
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I found a website that could help you with your problem
https://planetcalc.com/981/
just put in the numbers and it will calculate for you.
hope i helped :-)