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Mathematics
Ratio, Proportion and Rates of Change
Ratio and Proportion Fundamentals
Proportionality Equations
Proportionality Equations
What You Need to Know
Understand that
X
X
X
being inversely proportional to
Y
Y
Y
is equivalent to
X
X
X
being proportional to
1
Y
\frac{1}{Y}
Y
1
.
Construct and interpret equations that describe direct and inverse proportion.
Revision Notes
1
Proportionality Equations
9 key terms
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