Formulae Flashcards

1
Q

Formula

A

An equation linking sets of physical variables. Plural: formulae.

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2
Q

Expression

A

A mathematical form expressed symbolically.

Examples: 7+3; a^2+b^2

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3
Q

Substitution

A

In Algebra “Substitution” means putting numbers where the letters are.

Example: If x=5, then what is x + ^10/_x ?

Put “5” where “x” is: 5 + ^10/_5 = 7

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4
Q

Variable

A

In algebra, a variable is a symbol that stands for an unknown quantity

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5
Q

Subject

A

The subject of a formula is the variable that is being worked out.

For example,
A=bh
(area = base x height)
The subject of the formula is A

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