This takes too long to do. I will provide the steps.
For each point given, plug into the equation y = - x.
Point 1:
(-1, -3)
y = -x
y = -(-1)
y = 1
The first point reflected across the line y = - x is (-1, 1).
Do the same with the remaining points.
Answer:
Helmets-12
Baseballs-32
Step-by-step explanation:
Given the tax rate as 6% and the reduced prices as $2.25/baseball and $22.50/helmet and that the budget is $400:
The new prices are reduced price plus tax:

Let x be the number of groups of 8 baseballs as well as the number of groups of 3 helmets,therefore:

Substitute for x=4 to find the highest number of baseballs and helmets:
Helmets=4x3=12
Baseball=4x8=32
#Price cost will be 12x23.85+32x2.39=362.68 (balance=37.32)
Hence, Shaw can buy 12 helmets and 32 baseballs and still remain with $37.32
There is 102 juniors are girls and 136 juniors are boys.