X: 1, 2
J: 1, 5
Y: -3, 5
Start with the x-axis which is the horizontal line, and then the y-axis which is the vertical line, then you just find the dot and the points!
Answer:
Therefore 164 children and 89 adults swam at the public pool that day.
Step-by-step explanation:
Given that,
253 people used the public swimming pool.
The daily prices for children are $1.50 and for adults are $2.25.
Let the number of children be x.
Then number of adult is (253-x)
The total money collect on that day is ![=\$[(1.50\times x)+2.25(253-x)]](https://tex.z-dn.net/?f=%3D%5C%24%5B%281.50%5Ctimes%20x%29%2B2.25%28253-x%29%5D)
![=\$[1.50x+569.25-2.25x]](https://tex.z-dn.net/?f=%3D%5C%24%5B1.50x%2B569.25-2.25x%5D)
![=\$[569.25-0.75x]](https://tex.z-dn.net/?f=%3D%5C%24%5B569.25-0.75x%5D)
According to the problem,





Therefore 164 children and (253-164)=89 adults swam at the public pool that day.
D is the correct answer because it can be simplified
4x + y = 1
-2x - y = -8
2x = -7
x = -7/2
2(-7/2) + y = 8
-7 + y = 8
y= 15
elimination