Linear equation in two variable
Exercise : 4.4
1. Give the geometric representations of y = 3 as an equation :
(i) in one variable
(ii) in two variables
Solution :
(i) y = 3
(ii) y = 3
= (0)x + y = 3
= y = 3 - (0)x
2. Give the geometric representations of 2x + 9 = 0 as an equation :
(i) in one variable
(ii) in two variables
Solution :
(i) 2x + 9 = 0
(ii) 2x + y = 0
= 2x + 0.y + 9 = 0
= 2x = -9 = x = -4.5