Consider the y-intercept. The equation of your model is y = 8.39x. The y-intercept is zero. Should it be? Explain.

yes, the y-intercept should be 0.

Step-by-step explanation:

The b in this slope-intercept equation is 0, so the y-intercept is 0.

Another way to figure out the y-intercept is to set x to 0; the resulting y-value is the y-intercept:

y = 8.39(0)

y = 0 so the y-intercept is 0.

it reflected because of the glass maube

step-by-step explanation:

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