Find the slope of the line. (0,-1) (3,-2)

-1/3

Step-by-step explanation:

m = (y2-y1) / (x2-x1)

m = (-2-(-1)) / (3-0)

m = (-2+1) / 3

m = -1/3

-1/3

Step-by-step explanation:

equation is y2-y1/x2-x1

So the second y (-2) minus the first y (-1) is -1

And 3-0 is 3. So 3/1

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