Match the verbal expression with its algebraic expression.

a ÷ 2

y2

b + 2

x − 2

2z

1.
Some number increased by two

2.
A variable decreased by two

3.
Product of an unknown value and two

4.
Quotient of some number and two

5.
An unknown value squared

Step-by-step explanation:

1. b + 2

2. x - 2

3. 2z

4. a ÷ 2

5. y^2

step-by-step explanation:

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'.