Physics - Unit 1 Graphical Methods - Quiz, Flashcards & Trivia

1. What is the equation representing an inverse relationship?

Y = mx + b, where x and y have a direct relationship.

Y = m/x + b, where x increases and y decreases at a constant rate.

Y = m(1/x) + bx increases, y decreases

Y = mx - b, where x increases and y also increases.

In an inverse relationship, as x increases, y decreases. This is represented in the equation y = m(1/x) + b, where y is the dependent variable, x is the independent variable, and m and b are constants.

Explanation

In an inverse relationship, as x increases, y decreases. This is represented in the equation y = m(1/x) + b, where y is the dependent variable, x is the independent variable, and m and b are constants.

2. What is the equation that represents no relationship between two variables?

Y = by is constant

Y = mx + b

Y = x^2

Y = 3x + 2

The correct answer y = b represents a scenario where y is constant and does not depend on any other variable.

Explanation

The correct answer y = b represents a scenario where y is constant and does not depend on any other variable.

3. What is the equation representing a direct relationship?

Y = -mx + bx increases, y decreases.

Y = mx + bx increases, y increases

Y = mx - bx increases, y increases.

Y = -mx - bx increases, y decreases.

In a direct relationship, as x increases, y also increases. The equation y = mx + b represents this relationship, where m is the slope and b is the y-intercept.

Explanation

In a direct relationship, as x increases, y also increases. The equation y = mx + b represents this relationship, where m is the slope and b is the y-intercept.

4. What is the equation for a y squared relationship?

Y2 = mx + bthe square of y is proportional to x

Y = √(mx + b)

Y = mx + b

Y = mx^2 + b

In a y squared relationship, the square of y is proportional to x. Therefore, the correct equation is y^2 = mx + b.

Explanation

In a y squared relationship, the square of y is proportional to x. Therefore, the correct equation is y^2 = mx + b.

5. In a scientific experiment, the variable that is manipulated or changed by the researcher is known as the:

Dependent variable

Independent variablecontrolledcause

Controlled variable

Confounding variable

The independent variable is the variable that the researcher intentionally manipulates to see its effect on the dependent variable. The controlled variable is kept constant throughout the experiment. The dependent variable is the variable being measured or observed in response to changes in the independent variable. Confounding variables are factors that may unintentionally affect the results of the experiment.

Explanation

The independent variable is the variable that the researcher intentionally manipulates to see its effect on the dependent variable. The controlled variable is kept constant throughout the experiment. The dependent variable is the variable being measured or observed in response to changes in the independent variable. Confounding variables are factors that may unintentionally affect the results of the experiment.