Writing this in slope-intercept form or y=mx+b. y = y coordinate m = slope x = x coordinate b = y intercept (where the line intercepts on the y axis)
The slope is 1 because it's moving up and if you move over 1 unit to the right, then 1 unit up, you would cross another point. The y-intercept is -4 because that's where the line intercepts the y-axis.
Hence, the equation would be y=x-4
Note: I did not have y=1x-4 because <em>1x is the same as x.</em>
you would do the area(108) times 6 since you would be stacking, then you divide by 9, since you want to see how much sand would be in each bag, so you would have 72 bags
