Working be x and classes be y
So
And
Graph both .
The solution region is the best way.(Blue part)
24,308,676
Twenty-four million three hundred eight thousand six hundred seventy-six
Relation 1 is a function because we don't have any repeated x values. Each input goes to exactly one output.
On the other hand, relation 2 is <u>not</u> a function because x = 4 repeats itself. The input x = 4 leads to more than one output.
Answer:4 hours
Step-by-step explanation: