It's the group of correct solutions to a given problem.
Imagine you have apples, pears and peaches you're asked <em>"what fruits do you have"</em>? Your solution set would be {apple, pear, peach}.
Answer:
0.06 and to change that to a percentage all you do is move the decimal point 2 places to the right so the answer would be <u>6</u><u> </u>percent
The y-intercept is 0 because you can add it to the equation and it won't change your slope.