At the building site there are 16 pallets with sacks of cement the total weight of all the pallets and cement is 4856 pounds each pallet with cement weighs the same amount how much does each pallet with cement weigh

The first thing we must do for this case is to define a variable.
 We have then:
 x: weight of each pallet with cement
 We then have the following equation:
 16x = 4856
 Clearing x we have:
 x = (4856) / (16)
 x = 303.5 punds
 
 each pallet with cement weigh:
 x = 303.5 punds

the formula of a slope:

we have the points (-2, 7) and (2, 3). substitute:

answer: the slope is equal -1.