A. 1; you start at 10 pieces of gum which is a positive amount, making the y-intercept in this case, 10. Lupe is consuming/subtracting 2/1 pieces of gum per day, she is taking away meaning the slope should be negative, in this case the slope is -2.
B. 4; You start at 10 pages which is why you have a positive y-intercept of 10. He is reading 2/1 pages per minute, so the number of pages is increasing, meaning the slope will be positive, in this case 2.
C. 2; He is in debt 10 dollars, which is a negative amount meaning the y-intercept will be negative, in this case -10. He pays 2 dollars each week, he is adding money so the slope will be positive, in this case being 2.
D. 3; the degrees start off negative, which is why the y-intercept will also be negative, in this case -10. The degrees are still dropping at 2 degrees per hour, meaning the slope will be negative, in this case, -2.
I would tell him yes, that's a close amount to how many times that will land heads, but I will tell him that it could also be a little more or a little less than that amount.
