Question

Find two solutions for the equations:
(i) 2x - y = -5
(ii) y - 3x = 7 [4 MARKS]

Answer 1

Solutions : 1 Mark each

To find any solution of a linear equation in two variables, we just put a random value for one of the two variables and then find the corresponding value for the other variable.

(i) 2x – y = -5
Putting x = 0, we get
–y = -5
y = 5
Hence, (0, 5) is a solution
Putting x = 1, we get
2 – y = -5
-y = -5 – 2
y = 7
Hence, (1, 7) is a solution

(ii) y – 3x = 7
Putting x = 0, we get
y – 0 = 7
y = 7
Hence, (0, 7) is a solution
Putting x = 1, we get
y – 3 = 7
y = 4
Hence, (1, 4) is a solution