Direct Variation

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

Do x and y show direct variation?
y = 2x + 3

Back

No

Front

Do x and y show direct variation? y = 5x

Back

Yes

Front

Do x and y show direct variation? y = x²

Back

No

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

Is this the graph of a direct variation?

Back

No

Front

Does this table of values represent a direct variation?

Back

Yes

Front

Does this represent a direct variation?

Back

No