Areflection across the line y = x is represented by

Step-by-step explanation and

A reflection across the line y=x  (a line through the origin and at +45 degrees to the x-axis) is essentially an interchange of the x- and y-values, such as finding inverses.

For this reason, the reflection is usually represented by the operator

S_[x=y} : (x,y) ⇒ (y,x)

where _[...]  represents subscript (smaller letters near the bottom.

a) 0.25x times 3. (could be wrong on equation.)

b) 2.25 pound of dark chocolate. (can i eat all the chocolate? plz? anyway, again, could be wrong, but i hope im right. all the chocolate together should be 5.25 pounds)

have a good day!

graph them on a graphing calculator, press 2nd trace. select intersect. hit enter until it says answer. ti 84 works best

step-by-step explanation: