Jamie owns about 3 times as many books as carly. jamie owns 42 books. write an equation and use it to estimate the number n of books carly owns

y = 3n where y is the number of books owned by Jamie which is equal to 42

Step-by-step explanation:

If Jamie owns about 3 times as many books as Carly. It means that the number of books owned by Jamie is a function of the number of books owned by Carly.

If Carly owns n number of books, and Jamie owns y number of books then,

y = 3n

If Jamie owns 42 books then Carly owns

42 = 3n

n = 42/3

n = 14

Carly owns 14 books

the speed is   miles per hour > is false

step-by-step explanation:

we know that  

a relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form or

in a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin

the graph shown in the figure represent a direct variation

the slope of the line represent the speed

for the point

substitute the values of x and y

the linear equation is equal to

statements

case a) it takes hours to go miles

the statement is true

because

substitute

for

find the value of y in the linear equation

> is correct

case b) the speed is   miles per hour

the statement is false

because the speed is

case c) the unit rate for the trip is

the statement is true

because the speed is equal to the slope of the linear equation

case d) it took minutes to go the first miles

the statement is true

because

substitute

for

find the value of y in the linear equation

> is correct