What does that mean if you don’t give us a hint?
The required system of equations is 
Step-by-step explanation:
We need to write a system of linear equations that has the ordered pair (1,4) as it's solution.
It means we need to find system of linear equations, which after being solved gives x=1 and y=4
Let the system of equations be:

I have made equations such that adding x+y gives 5 i,e (1+4=5) and subtracting x-y gives -3 (1-4=-3)
Now solving this system of equations to find value of x:

Adding eq(1) and eq(2)

Putting value of x=1 into eq(1) to find value of y

The solution set after solving system of equations is (1,4).
The required system of equations is 
Keywords: System of equations
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Answer:
37 pounds
Step-by-step explanation:
so each x in the plot represents one puppy that ways the amount shown on the x axis. its essentially a bar graph.
weighing less than 6 pounds so all puppies that weigh 3,4,and 5 pounds.
there are 5 puppies weighing 3 pounds each
5x3=15
there are 3 puppies weighing 4 pounds each
3x4=12
there are 2 puppies weighing 5 pounds each
2x5=10
add this all up to get the total
15+12+10=37
Answer:

Step-by-step explanation:
This is the answer because it is subtracted so that you get the answer
168
132, 135, 138, 141, 144, 147, 150, 153, 156, 159, 162, 165, 168