As we know, two weeks is 14 days. If they caught 42 mahi mahi fish in 14 days, then they cought approximately 42 / 14 = 3 mahi mahi fish a day.
Hopefully it'll help you :)
The answer to your question is 1.75
To find the equation, find the slope from the two points. The slope formula is (y1-y2)/(x1-x2). Plugging in the two points, you should get 3 as your slope.
As a line, the answer would be y=3x. Therefore, y=3x represents the function described.
Sorry i cant answer with the cracks...can't see