independent and dependent variables

In the equation y=2x+3, which is the dependent variable?

• x

• y

• 2

• 3

What happens to the dependent variable when the independent variable changes?

• Nothing changes

• It stays constant

• It changes in response

• It becomes independent

In a science experiment measuring how sunlight affects plant growth, what is the independent variable?

• Plant height

• Amount of sunlight

• Time of measurement

• Plant species

If y=5x, and x increases by 2, what happens to y?

• Increases by 2

• Decreases by 2

• Increases by 10

• Stays the same

In the expression z=3a−4, which variable is dependent?

• a

• 3

• z

• 4

A student measures how temperature affects ice cream melting time. The dependent variable is:

• Time to melt

• Room temperature

• Ice cream flavor

• Container size

In the equation p=4q+1, what is the independent variable?

• p

• q

• 4

• 1

Which statement about variables is TRUE?

• The dependent variable is always plotted on the x-axis

• The independent variable is controlled by the experimenter

• There can be multiple dependent variables in an equation

• Independent and dependent variables are always equal

In a graph showing how study time affects test scores, what goes on the y-axis?

• Study time

• Test scores

• Student names

• Subject type

If w=6v, how does w change when v doubles?

• Stays the same

• Doubles

• Triples

• Increases by 6