Question

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​

Answer 1

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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