LESSON 18. QUIZ Name:
Solve the problems.
1
a function of
The graph shows Aaron's heart rate
time while exercising.
Choose True or False for each statement.
Heart Rate (bpm)
o
А
B C D
Time (min)
True
False
a. Section A is decreasing and linear.
O
O
O
b. Section B is increasing and linear.
c. Section C is decreasing and nonlinear.
ololo
O
d. Section D is increasing and nonlinear.
O

77

step-by-step explanation:

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional

answer: the answer is e

step-by-step explanation: