Proportions: word problems (9/23)

Front

What is a proportion?

Back

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

Front

How do you solve a proportion?

Back

To solve a proportion, cross-multiply the terms and then isolate the variable.

Front

If 5 kg of dough is prepared in 2 hours, how much dough is prepared in 4 hours?

Back

10 kg.

Front

If Gwen learned 8 recipes in 4 weeks, how many recipes will she learn in 5 weeks?

Back

10 recipes.

Front

What is the formula for direct variation?

Back

y = kx, where k is the constant of variation.

Front

If Jim prepared 4 grams of dough in 2 hours, how much dough did he prepare in 4 hours?

Back

8 grams.

Front

Back

z = 45.

Front

Back

s = 30.

Front

What does it mean if two quantities are directly proportional?

Back

If two quantities are directly proportional, as one quantity increases, the other quantity increases at a constant rate.

Front

How can you represent a direct proportion graphically?

Back

A direct proportion can be represented by a straight line that passes through the origin on a graph.