Direct Variation

Front

What is the equation format for direct variation?

Back

y = kx

Front

What does the graph of a direct variation look like?

Back

A straight line that passes through the origin.

Front

Is the relationship in the table a direct variation if it does not pass through the origin?

Back

No, it is not a direct variation.

Front

What does the constant of variation represent in the equation y = 9.50x?

Back

It represents the cost per movie ticket, which is $9.50.

Front

What does 'k' stand for in the direct variation equation?

Back

Constant of proportionality.

Front

If y varies directly with x, what happens to y if x is doubled?

Back

y is also doubled.

Front

What is the relationship between x and y in direct variation?

Back

They are proportional to each other.

Front

How can you determine if a set of points represents a direct variation?

Back

Check if the ratio of y to x is constant for all points.

Front

What is the constant of variation in the equation y = 3x?

Back

The constant of variation is 3.

Front

If y = kx and k = 5, what is y when x = 4?

Back

y = 20.