(05.06 lc)

which graph represents a decreasing function?

four graphs of y against x are shown. the title for the first graph is graph a, the title for the second graph is graph b, the title for the third graph is graph c, and the title for the fourth graph is graph d. graph a is a straight line joining the ordered pairs 0, 4 and 6,4. graph b is a straight line joining the points 0, 0 and 6,6. graph c is a straight line joining the points 0, 5 and 6, 0. graph d is a straight line joining the points 6, 0 and 6,5.
select one:
a. graph a
b. graph b
c. graph c
d. graph d

Graph C represents a decreasing function.

Step-by-step explanation:

Graph A:  Since y does not change when x increases from 0 to 6, this graph (a horizontal line) represents a constant function.  REJECT this choice.

Graph B:  The line connecting (0, 0) to (6, 6) is a straight line with slope +1; it's an increasing function.  REJECT this choice.

Graph C:  As we go from (0, 5) to (6, 0), y decreases by 5.  Thus, this is the correct answer choice.

Graph D is a vertical straight line; its slope is undefined.  REJECT this choice.

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer

a is the right answer