Answer:

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
Let
x -----> the number of hours worked
y ----> the amount paid in dollars
In this problem we have a proportional variation, between two variables, x, and y
<em>Find out the constant of proportionality k</em>
For (5,300) ----->
----> 
For (4,240) ----->
----> 
For (6,360) ----->
----> 
The constant k is

The equation is equal to

The unit rate of change of dollars with respect to time is equal to the constant of proportionality or slope of the linear equation
therefore

The answer is line segment
Answer:
x = 0
y = -4
negative 4 cuz the line goes down, meaning it's negative
Answer:
18 red marbles
Step-by-step explanation:
Because the ratio of yellow marbles to red marbles is 1:6 in the population, the expected number of red marbles is 6 times the number of yellow marbles in the representative sample. there should be 18 red marbles.