Eric wants to put tile in his kitchen and place them down in a triangular pattern. He has to figure out the area of the first piece of tile that is in the shape of a triangle, so he can cut the rest the same. The base of the triangle is 20in, and the height 24in.
Based on these measurements, what would the area be of the triangle? *
A. 22
B. 44
C. 240
D. 480

answer: a.   one is a factor of every whole number since every number is divisible by itself.

the function makes a strait line horizontally with no x intercept but a y intercept at 9.

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

step-by-step explanation: