Alvin is heating a solution in his chemistry lab. The temperature of the solution starts at 14°C. He turns on the burner and finds that the solution's
temperature increases by 2°C every minute. This graph shows the
temperature change.

Which point is on his graph?
A. (1, 14)
B. (22,4)
C. (3,20)
D. (5,21)

vv

Step-by-step explanation:

C. The line first connects at c.

Step-by-step explanation:

1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3