There is a strong positive linear correlation between the size of a cell phone data plan and the number of text messages sent. There is a strong negative linear correlation between the size of a cell phone data plan and the number of text messages sent.

There is no correlation between the size of the data plan and the number of text messages in the US.

There is a weak positive linear correlation between the size of a cell phone data plan and the number of text messages sent.

the answer is b

what is the question here

step-by-step explanation:

options a,b,c are the right answer.

step-by-step explanation:

a linear parent function is always represented as y = x

if we write this function in the form of y=mx+c

⇒

or  

now if we plot a graph we will find these characteristics:

1) y intercept of the graph is zero so its a straight line passing through origin.

2) as we can see in both the forms of function written, values of x and y may be either positive or negative for the positive slope means points on the graph are either in first quadrant or in third one.

3) it's slope is one.

step-by-step explanation:

use pothagarean therom

a^2+b^2=c^2 so first ac

acm is a right triangle because c= 90°

and am (the hypotenuse or c) =16+9 =25

but there is not enough info we need another angle or side length