linear equations in two variables

Question 1: Draw the graph of each of the following linear equations in two variables: (i) x+y=4 (ii) x–y=2 (iii) y=3x (iv) 3=2x+y Ex: 4.2 | Question 3 & 4 Question 2

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Question 3: Check which of the following are solutions of the equation x – 2y = 4 and which are not: (i) (0,2) (ii) (2,0) (iii) (4,0) (iv) ( √2,4 √2) (v)(1,1) Question 4: Find the value of k, if…

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Question 2: Write four solutions for each of the following equations: (i) 2x+y=7 (ii) πx+y=9 (iii) x=4y Question 1 Question 3 & 4

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Question 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 Ex: 4.1 | Question 2 Question 2

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Question 2: Express the following linear equations in the form ax + by + c = 0 and indicate the values of a, b and c in each case: (i) 2x+3y= 9.353535… (ii) x– 5y –10=0 (iii) –2x+3y=6 (iv) x=3y…

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Question 1: The cost of a notebook is twice the cost of a pen. Write a linear equation in two variables to represent this statement. Class 9 – Home Question 2

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Example 9: Solve the equation 2x + 1 = x – 3, and represent the solution(s) on (i) the number line, (ii) the Cartesian plane. Example 8 Class 9 – Home

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Example 8: For each of the graphs given in Fig. 4.5 select the equation whose graph it is from the choices given below: (a) For Fig. 4.5 (i), (i) x+y=0 (ii) y=2x (iii) y=x (iv) y=2x+1 (b) For Fig. 4.5…

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Example 7: You know that the force applied on a body is directly proportional to the acceleration produced in the body. Write an equation to express this situation and plot the graph of the equation. Example 6 Example 8

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Example 6: Draw the graph of x + y = 7. Example 5 Example 7

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