Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division, expressed as 'a to b' or a:b.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Tags

CCSS.7.RP.A.2A

Front

How do you solve a proportion?

Back

To solve a proportion, cross-multiply and then divide to find the unknown value.

Tags

CCSS.7.RP.A.2C

Front

What is the constant of proportionality?

Back

The constant of proportionality is the constant value (k) in the equation y = kx, representing the ratio of y to x.

Tags

CCSS.7.RP.A.2B

Front

If y = 8x, what is the constant of proportionality?

Back

The constant of proportionality is 8.

Tags

CCSS.7.RP.A.2B

Front

How do you convert a rate to a unit rate?

Back

To convert a rate to a unit rate, divide both quantities by the same number to find the value for one unit.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

If Richard walks \(\frac{1}{3}\) mile in \(\frac{1}{6}\) hour, how do you find his speed?

Back

Speed = Distance / Time = \(\frac{\frac{1}{3}}{\frac{1}{6}} = 2\) miles per hour.

Tags

CCSS.7.RP.A.1

Front

What is a scale drawing?

Back

A scale drawing is a representation of an object with accurate proportions, using a specific ratio to reduce or enlarge the size.

Tags

CCSS.7.RP.A.2C

Front

If the scale is 1 cm : 9 m, how do you find the drawing width of a 54 m field?

Back

Width in drawing = Actual width / Scale factor = \(\frac{54}{9} = 6\) cm.

Tags

CCSS.7.RP.A.2C

Front

What is the formula for finding the constant rate of change?

Back

Constant rate of change = (Change in y) / (Change in x).

Tags

CCSS.HSF-LE.A.1B