Proportions

Flashcard
•
Mathematics
•
9th Grade
•
Hard
+8
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a proportion?
Back
A proportion is an equation that states that two ratios are equal.
Tags
CCSS.7.RP.A.2A
2.
FLASHCARD QUESTION
Front
How do you solve a proportion?
Back
To solve a proportion, cross-multiply the two ratios and then solve for the unknown variable.
Tags
CCSS.7.RP.A.2C
3.
FLASHCARD QUESTION
Front
What is the cross-multiplication method?
Back
The cross-multiplication method involves multiplying the numerator of one ratio by the denominator of the other ratio and setting the two products equal to each other.
Tags
CCSS.6.RP.A.3A
4.
FLASHCARD QUESTION
Front
If \( \frac{a}{b} = \frac{c}{d} \), what is the relationship between a, b, c, and d?
Back
The relationship is that a times d equals b times c (ad = bc).
Tags
CCSS.3.NF.A.3A
CCSS.3.NF.A.3B
CCSS.4.NF.A.1
5.
FLASHCARD QUESTION
Front
What is the first step in solving the equation \( \frac{7}{9} = \frac{x}{6} \)?
Back
The first step is to cross-multiply: 7 * 6 = 9 * x.
Tags
CCSS.7.RP.A.3
6.
FLASHCARD QUESTION
Front
What is the value of x in the equation \( \frac{7}{9} = \frac{x}{6} \)?
Back
x = 4.67 (approximately).
Tags
CCSS.3.NF.A.3B
CCSS.4.NF.A.1
7.
FLASHCARD QUESTION
Front
What does it mean if two ratios are equivalent?
Back
If two ratios are equivalent, it means they represent the same relationship between quantities.
Tags
CCSS.6.RP.A.3A
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