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Linear Equation in One Variable

Question

Linear equation in one variable is :
$2 x = y$
$y^{2} = 3 y + 5$
$4 x - y = 5$
$3 t + 5 = 9 t - 7$

A

2 x = y

B

4 x - y = 5

C

y^{2} = 3 y + 5

D

3 t + 5 = 9 t - 7

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Solution

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A linear equation with one variable is an equation with only one variable and the highest power of the variable is $1$ .

In first option, there are $2$ variables, $x$ and $y$ .

In the second option, there is only a $1$ variable but the highest power is $2$ hence, it is a quadratic equation.

In the third option, there are $2$ variables, $x$ and $y$ .

In the fourth option, there is only $1$ variable and the highest power is $1$ as well.

Hence, option $D$ is correct,

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Q1

Which of the following is not a linear equation in one variable ? why?

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Q2

Which of the following pairs of linear equations is inconsistent?
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Q3

Is

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Is the equation

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