Proportionality

What is an independent variable ?

• The variable that responds to the independent variable. It is dependent on the changes made to the independent variable It is plotted on the y-axis of the Cartesian plane.

• Is the variable that is being manipulated and changed at constant intervals. It is plotted on the x-axis on a Cartesian plane.

• Cheese

• The answer is soap

What is a controlled variable ?

• The variables that will be fixed and kept constant throughout the investigation to get fair results.

• The variable that responds to the independent variable

• Is the variable that is being manipulated and changed at constant intervals

• Watermelon

Is a direct proportionality graph a...

• Bar graph

• Parabola

• Straight line graph

• Exponential graph

Must a direct proportionality graph pass through the origin ?

• Yes

• No

• Maybe

• Miskien

What is the equation of a directly proportional graph ?

• Y=zc+2

• y=kx

• y=x2-2

• y=mx+c

What is the definition of an inversely proportional graph ?

• Generally, y is said to be inversely proportional to x if x increases and y decreases

• x increases as y increases

• y decreases and x increases exponentially

• cheese

What is an independent variable in a scientific experiment?

• The variable that responds to the independent variable. It is dependent on the changes made to the independent variable. It is plotted on the y-axis of the Cartesian plane.

• Is the variable that is being manipulated and changed at constant intervals. It is plotted on the x-axis on a Cartesian plane.

• Chocolate

• The answer is bread

What is a dependent variable in an experiment?

• The variable that responds to the independent variable. It is dependent on the changes made to the independent variable. It is plotted on the y-axis of the Cartesian plane.

• Is the variable that is being manipulated and changed at constant intervals. It is plotted on the x-axis on a Cartesian plane.

• Vanilla

• The answer is butter

What is the relationship between the independent and dependent variables in a direct proportionality graph?

• They have no relationship

• They are inversely proportional

• They are directly proportional

• They are exponentially related