What's the slope of the line with the points (4,2) and (-1,7)?

How can you decide witch operations to use to slice a two step equation

The dolphins at the webster are fed 1/2 of a bucket of fish each day the sea otters are fed 1/2 as much fish as the dolphins how many buckets of fish are the sea fed each day? simplify you answer and write it as a proper fraction or as a whole or mixed number

What expression is equivalent to (84+16)