What is the slope of the line that passes through the points (1, 3) and (5, –2)?
a.4/5
b.-4/5
c.-5/4
d.5/4

2.the sum of two consecutive odd integers is 80. what is the smaller number?

a.43

b.41

c.39

d.37

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