Annie and her friends are playing a game called doubles. in the game, a player rolls two dice at the same time. the outcome of each roll is the sum of the two dice. extra points are scored for rolling doubles the same number on both sides.
use the multiplication principle to find the total number of possible outcomes for each roll in the game.

There are 6 possible outcomes for die A and 6 possible outcomes for die B.
Each of the 6 outcomes of die A can be combined with each of the 6 outcomes of die B. Therefore the total number of possible outcomes for each roll is given by:

Slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.  To write this in slope-intercept form we must isolate the y:
2x + 3y = 1470
2x + 3y - 2x = 1470 - 2x (subtraction will cancel the positive 2x on the left side of the equation)
3y = -2x + 1470 (since they are not like terms we cannot combine them, we leave them separate)
3y/3 = -2/3x + 1470/3 (cancel the 3 by dividing; EVERYTHING gets divided to keep it equal)
y = -2/3x + 490
The slope of this equation is -2/3 and the y-intercept is 490.
To graph this equation, plot 490 on the y-axis first, since it is the intercept.  Then count over to the right 3 and down 2 to find the next point; continue this for all successive points.
In function notation this would be f(x) = -2/3x + 490.  This function shows how the profit on wrap specials changes as the number of sandwich specials sold increases.  The graph of the function is attached.
The next month, when Sal's profit increased, the function changes because the y-intercept changes.  The slope stays the same.