Which of these situations can be represented by the opposite of -9
a. you walk down 9 flights of stairs
b. you climb up 9 flights of stairs
c. the temperature drops 9 f
d. you spend $9 on a book

. + λrh() e 1 1 2 4 4 4 4 4 3 4 4 4 4 4 + th−1(− s(x)2 dx ω + λrh−1() e 2 1 2 4 4

step-by-step explanation:

a) 0,0; 1,1; and 2,2

step-by-step explanation:

these have the exact same coordinates, thus they are the correct function.