Question

What is a coefficient?

Answer 1

it is a constant (think number) that multiplies a variable (think "x")

in
2x
2 is the coefficient

you often see coefficients in expressions:
\[y= 2x^2 +3x + 4\]
the 2 is the coefficient of x^2
the 3 is the coefficient of x
the 4 is not a coefficient (it is not multiplying a variable)

Answer 2

Thank you.