Which of the following equations is a linear equation ? A) 5 + 4x2 =

1.	Which of the following equations is a linear equation ? A) 5 + 4x2 = y + 3 B) x + 2y = y2 – x C) 3 – x = y + 4 D) x2 + y = 0
Answer» Correct option is (C) 3 – x = y + 4 (A) \(5 + 4x^2 = y + 3\) \(\Rightarrow\) \(4x^2-y+2=0\) which is not a linear equation. (B) \(x + 2y = y^2 - x\) \(\Rightarrow\) \(y^2-2x-2y=0\) which is not a linear equation. (C) \(3 - x = y + 4\) \(\Rightarrow\) \(x+y+1=0\) which is a linear equation. (D) \(x^2 + y = 0\) which is not a linear equation. Correct option is C) 3 – x = y + 4

Which of the following equations is a linear equation ? A) 5 + 4x2 = y + 3 B) x + 2y = y2 – x C) 3 – x = y + 4 D) x2 + y = 0

Answer»

Correct option is (C) 3 – x = y + 4

(A) \(5 + 4x^2 = y + 3\)

\(\Rightarrow\) \(4x^2-y+2=0\) which is not a linear equation.

(B) \(x + 2y = y^2 - x\)

\(\Rightarrow\) \(y^2-2x-2y=0\) which is not a linear equation.

(C) \(3 - x = y + 4\)

\(\Rightarrow\) \(x+y+1=0\) which is a linear equation.

(D) \(x^2 + y = 0\) which is not a linear equation.

Correct option is C) 3 – x = y + 4