Answer:
C
Step-by-step explanation:
The values are not vectors so ST/SR should be 3
proportional relationships have constant ratios.
the graph is a line, so it is a proportional relationship. (A)
the function is in the form y=kx (proportional function) (C)
Find the ratio of the tables: (B)

D

All represent a proportional relationship
Let
x-------> the time in minutes
y-------> the temperature in Fahrenheit degrees

we know that
<u>the change in the y-values between two points is equal to</u>

Substitute the y-values of the point A and B in the formula


<u>the change in the x-values between two points is equal to</u>

Substitute the x-values of the point A and B in the formula


therefore
<u>the answer is</u>
The change in the y-value is
and the change in the x-value is 
Hi there!

3(x - 2) < 18
Begin by dividing both sides by 3:
3(x - 2)/3 < 18/3
x - 2 < 6
Add 2 to both sides:
x - 2 + 2 < 6 + 2
x < 8
X is 90 degrees. If AB is the diameter, then it passes through the centre. X is 90 degrees because the angle in a semicircle is always a right angle.