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S2 Summer Holiday Homework
21. Which of the following equations are linear equations in two unknowns?
I. xy + 2y=3
1. x-2y = y
III. 3x + 2y = 5
.
A. I and II only
B. I and III only
C. II and III only
D. I, II and III​

Respuesta :

Tucon

 

I. xy + 2y=3       Not linear equation because is grade 2 equation  (xy).

II. x-2y = y              Are linear equations in two unknowns  (x and y).

III. 3x + 2y = 5      Are linear equations in two unknowns  (x and y).

Corect ansver:    C)  II and III only

.

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