8.1/8.2

Question 1

Ratio

Answer 1

If a and b are two quantities that are measured in the same units, then the ratio of a to b is a:b or a/b

Question 2

Proportions

Answer 2

An equation that equates two ratios (w/x = y/z)

Question 3

Cross Product Property

Answer 3

The product of the extremes equals the product of the means

Question 4

Reciprocal Property

Answer 4

If two ratios are equal, then their reciprocals are equal. If a/b = c/d, then b/a = d/c

Question 5

Interchange Means Property

Answer 5

If a/b = c/d, then a/c = b/d

Question 6

Plus One Property

Answer 6

a/b = c/d if and only if a+b/b = c+d/d

Question 7

Geometric Mean

Answer 7

The geometric mean of two numbers, a and b, is the positive number x, such that a/x = x/b