C.O.P. and Proportional Relationships

If y = kx and k = 6, what is the value of y when x = 3?

• y = 12

• y = 15

• y = 18

• y = 21

If the graph of a proportional relationship is not a straight line, what does this indicate?

• It indicates that the relationship is not proportional.

• It indicates a direct relationship between variables.

• It indicates a constant rate of change.

• It indicates that the relationship is linear.

If 5 phones are sold for $43 each, how much money is earned?

• $150

• $200

• $215

• $250

In the equation y = ½x, what is the constant of proportionality?

• 1/4

• 1/2

• 3/2

• 2

If a car travels at a constant speed of 40 miles per hour, what is the constant of proportionality in this scenario?

• 30 miles per hour

• 40 miles per hour

• 50 miles per hour

• 60 miles per hour

How do you find the constant of proportionality from a table of values?

• Multiply the input value (x) by the output value (y) for any pair of corresponding values.

• Add the output value (y) to the input value (x) for any pair of corresponding values.

• Divide the output value (y) by the input value (x) for any pair of corresponding values.

• Subtract the input value (x) from the output value (y) for any pair of corresponding values.

What is a proportional relationship?

• A relationship where two quantities maintain a constant ratio.

• A relationship where two quantities are equal to each other.

• A relationship that varies with time.

• A relationship that involves addition or subtraction.

What does the slope of a line represent in a proportional relationship?

• The slope represents the constant of proportionality.

• The slope represents the y-intercept of the line.

• The slope represents the rate of change in the x-direction.

• The slope represents the distance between two points on the line.

If a graph shows a straight line passing through the origin, what does this indicate about the relationship between the variables?

• It indicates a proportional relationship between the variables.

• It indicates an inverse relationship between the variables.

• It indicates no relationship between the variables.

• It indicates a quadratic relationship between the variables.

In the equation y = 7x, what is the constant of proportionality?

• 5

• 7

• 10

• 3