NCERT Solutions, Class 9 Maths Chapter 4 Linear Equation in two variables: Exercise 4.2, answered for the NCERT Class 9 textbook.
Exercise 4.2 Class 9 Maths Chapter 4 Linear Equation in two variables
1. Which one of the following options is true, and why?
y = 3x + 5 has
(i) a unique solution, (ii) only two solutions, (iii) infinitely many solutions
2. Write four solutions for each of the following equations:
(i) 2x + y = 7 (ii) ╧Аx + y = 9 (iii) x = 4y
3. Check which of the following are solutions of the equation x тАУ 2y = 4 and which are
not:
4. Find the value of k, if x = 2, y = 1 is a solution of the equation 2x + 3y = k.
