Question

which of the following is not a linear equation in one variable a. 3x+7=0 b. 8(x+y) =0 c.9y+3=0 d. 18-9x=0​

Answer 1

(B) 18-9x=0 ...............

Answer 2

$\underline{\pink{ Linear \: equation : }}$

If the degree of an equation is one then it is called a linear equation.

If a linear equation has only one variable then it is called a linear equation in one variable or simple equation.

$a. 3x+7 = 0 \\ \green { ( A \:linear \: equation \: in \: one \: variable \: x )}$

$b. 8(x+y) = 0 \\ \red { ( It \: not \:a \:linear \: equation \: in \: one \: variable )}$

$Here, It \:is \: a \: linear \: equation \: in \: two \\variables . i.e., x \: and \: y$

$c. 9y + 3= 0 \\ \green { ( A \:linear \: equation \: in \: one \: variable \: y )}$

$d. 18 - 9x = 0 \\ \green { ( A \:linear \: equation \: in \: one \: variable \: x )}$

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