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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
Read MoreExample 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
Read MoreExample 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…
Read MoreExample 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
Read MoreExample 6: Draw the graph of x + y = 7. Example 5 Example 7
Read MoreExample 5: Given the point (1, 2), find the equation of a line on which it lies. How many such equations are there? Example 3 & 4 Example 6
Read MoreExample 3: Find four different solutions of the equation x + 2y = 6. Example 4: Find two solutions for each of the following equations: (i) 4x+3y=12 (ii) 2x+5y=0 (iii) 3y+4=0 Example 1 & 2 Example 5
Read MoreExample 1: Write each of the following equations in the form ax + by + c = 0 and indicate the values of a, b and c in each case:(i) 2x + 3y = 4.37 (ii) x – 4 =…
Read MoreQuestion 1: Express each number as a product of its prime factors: (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v) 7429 Question 2: Find the LCM and HCF of the following pairs of integers and verify that LCM ×…
Read MoreQuestion 1: Use Euclid’s division algorithm to find the HCF of :(i) 135 and 225 (ii) 196 and 38220 (iii) 867 and 255 Question 2: Show that any positive odd integer is of the form 6q+1, or 6q+3, or 6q+5,…
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