Wow. I'm answering because that looks like a pain to type in. You can just post a picture you know.
Given points (0, 1),...(10,20)
Given a line through (0, 1.8) ... (10, 20.5)
Presumably the line described is the best fit line. You've told us the y intercept (the value when x=0) is 1.8. I believe you.
Answer: 1.8
What does it represent? The independent x is the number of months of practice. The dependent y is number of games won. The intercept of 1.8 says after zero months of practice we'll have won 1.8 games (on average). I know it's not clear exactly how that makes sense, but that's what it says.
Part B
For part B I'm tempted to show you how to do a real linear regression, but this is marked middle school so I better not.
Let's just take the first and last point. (0, 1), (10,20)
The line through those two points is
(10 - 0)(y - 1) = (20-1)(x-0)
10y - 10 = 19 x
10 y = 19x + 10
y = 1.9 x + 1
That's a bit different than the described best fit but we'll go with it. We got a slope of 1.9 and a y intercept of 1.
At x=13 we get
y = 1.9(13) + 1 = 25.7
Answer: 25.7 wins after 13 months of practice predicted
