In a which quadrants of the coordinate plane do the x-and y- coordinates have opposite signs

2nd and 4th

Step-by-step explanation:

The quadrants of a coordinate plane start with the top right, and go counterclockwise from 1 to 4. In the 1st quadrant, both values are positive, eliminating that answer. In the 2nd, X is negative while Y is positive, so there is one answer. In the 3rd quadrant, both values are negative, and since they are the same this answer is also eliminated. In the 4th quadrant, the bottom right, Y is negative while X is positive. Now we have both answers, which are the 2nd and 4th quadrants.

2

step-by-step explanation:

vvvvv

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