
Coefficient
Quantity Indicator
Coefficients show how many times to use the variable in an algebraic expression.
If 3y = 12, coefficient 3 indicates y is used three times to get 12.
Not Always Numbers
Coefficients can be numbers or parameters like pi, especially in formulas or equations.
In the equation C = 2πr, π is the coefficient of r.
Scale Factor
In geometry, coefficients scale a figure's dimensions without changing its shape.
A scale coefficient of 2 enlarges a shape’s dimensions by 2 times.