MCQ
Which of the following is a linear expression:
  • A
    $x^2 + 1$
  • B
    $y + y^2$
  • C
    $4$
  • $1 + z$

Answer

Correct option: D.
$1 + z$
D.  $1 + z$
Solution:
We know that, the algebraic expression in one variable having the highest power of the variable as $1,$ is known as the linear expression.
Here, $1 + z$ is the only linear expression, as the power of the variable $z$ is $1.$

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