3. This graph shows the linear relationship between commission $ earned (c) by salesperson and the number of sales he makes (s). Find the
constant of proportionality (r). Using the value for r, enter an equation in
the form of c=rs that represents the relationship between the
commission earned (c) and the number of sales (s).

c=8s (also sorry in advance if this is wrong )

Step-by-step explanation

40=r5

Divide both sides by 5 in order to find r

40 divided by 5=8

5 divided by 5 = 1

r=8

And the final answer is:

c=8s

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'.

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,