Which of the following is a linear equation in one variable?
A. $2 x + 1$
B. $5 (y - 1) = 3 (x + y)$
C. $x^{2} + x + 1 = 0$
D. $2 x + 1 = 10$
[1 mark]

Open in App

Solution

Option A is not an algebraic equation. It is an expression.
Option B is an equation but it has 2 variables.
Option C is an equation in one variable but the highest power of the variable is 2.
Option D is an equation in one variable.

So, option D is the correct answer.
[1 mark]

Suggest Corrections

Similar questions

\sqrt{3 x} + 9

x^{2} + 2 x - \sqrt{x} + 3

\sqrt{3} + 2 x - x^{2}

Question 14

Which of the following equations can be formed starting with x = 0?

(a) 2x + 1 = -1

(b) $\frac{x}{2} + 5 = 7$

(d) 3x - 1 = 1

x^{2} + x + 1 = 0

x^{2} - 2 x + 2 = 0

x^{2} + 2 x + 2 = 0

x^{2} + 2 x - 2 = 0

x + \frac{2}{x} + 3

3 \sqrt{x} + \frac{2}{\sqrt{x}} + 5

\sqrt{2} x^{2} - \sqrt{3} x + 6

Join BYJU'S Learning Program