DIRECT VARIATION

Front

Back

y = 5x

Front

Does the following represent direct variation?

Back

No

Front

An equation of direct variation can be written in the form: y = kx

Back

True

Front

The letter k in the equation y = kx stands for

Back

the constant of proportionality

Front

The graph of a direct variation must be a straight line and must pass through

Back

the origin (0,0)

Front

Is this the graph of a direct variation?

Back

Yes

Front

In a direct variation, y=39 when x=3. Find the value of y when x=2.

Back

26

Front

Is the given table a direct variation?

Back

No

Front

Which of the following illustrates a direct variation?

• The number of pizza slices to the number of persons sharing a whole pizza.
• The number of pechay plants in a row to the space between them.
• The cost of meat to its weight.

Back

The cost of meat to its weight.

Front

In direct variation, an increase in x causes an _______ in y.

Back

increase