1 Activity Read and study the problem.
Marcel buys 5-star apples for PhP5.00 each and 3 guyabanos for PhP32.50 each.
She gives the cashier a PhP200.00 bill. Write an expression for the total cost of the fruits
she buys and an equation for the amount of change the cashier should give her.
Il Questions to Ponder
1. How to use variables to represent the price of each fruit?
2. How to write an expression for the total cost of the fruits she bought and an
equation for the amount of change the cashier should give her?

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for the friend request.

when a figure, such as triangle (xyz) is reflected over the line y = x to create x'y'z' the x-coordinates and y-coordinates of the original image (pre-image) will be reversed for the image. (e.g., (x, y) > (y, x)) this means that the pre-image position of the x- and y-coordinates switch places which in turn provides a mirror like image of the original xyz.  

i notice that when i draw a line segment from x to x', that the points are parallel from each other -- they are exactly across from each other and do not intersect with any other points.  

yes, think i would see the same characteristic if you drew the line segment connecting y with the reflecting line and then y' with the reflecting line because of the essence of reflections. because it is a mirror image, each point was effected the same way which leads me to conclude that they same would apply to y and y'.

c. side angle side. u shares the same sides