Answer:
A formula is a fact or rule that uses mathematical symbols. It will usually have: an equals sign (=) two or more variables (x, y, etc) that stand in for values we don't know yet.
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Example: The formula for finding the volume of a box is:
x = 2y - 7Formula (relating x and y)a2 + b2 = c2Formula (relating a, b and c)
