Yes because you add 1 to c each time and you add 8 to d each time
Not really because you don't add the same value to each one.
B)Yes, because for m you always add one. And for n you always add 90.
1.10 dimes and 20 quarters.
2.20 dimes and 16 quarters.
3.30 dimes and 12 quarters.
4.40 dimes and 8 quarters.
5.50 dimes and 4 quarters.
Yes the relationship is linear because the points lie in a straight line.
Dimes: 55 with 2 quarters
Quarters: 22 with 5 dimes
I couldn't find a video so here is a link which I think explains Linear Relations.