Question

in the equation $x^2 - 4y = 2z - 1$, what is the constant?
\bigcirc a. $4y$
\bigcirc b. $2z$
\bigcirc c. $-1$
\bigcirc d. $x^2$

Explanation:

A constant is a term without variables. In the equation \(x^2 - 4y = 2z - 1\), the terms \(x^2\), \(4y\), and \(2z\) contain variables (\(x\), \(y\), \(z\)), while \(-1\) has no variables, so it is the constant.

Answer:

c. -1