2
Hence, the required area = 8 sq. units.
x 4x
2
4x 4 = 8 sq. units.
EXERCISE 4.3
1. Draw the graphs of following linear equations :
(1) 2x + y = 3
(ii) 2x - y = 6
INCERT)
(ii) 4x - 3y = 7
(iv) 20x + 25y = 200
2. Draw a graph of the line x = 2y + 3. From its graph, find the
) value of y when x=-5
(ii) value of x when y = 0
3. Draw the graphs of the following equations. Use each graph to check whether the point indicated
against each equation is a solution or not.
(1) 45. + 3y = 2; x=-4, y = 6
(ii) 5y - 2x = 0; x = 15, y = 6
(iii) - x + 3y = 5; x = 2, y = 1
4. Show that the points A(1, 2), B( - 1, - 16) and Co, - 7) lie on the graph of the linear equation
INCERT EXEMPLAR]
y=9x - 7.
5. Draw the graph of each of the following equations and find the point where the line intersects
x-axis.
(i) x - y = 2
(ii) y = 3x
INCERT
6. The following observed values of x and y are thought to satisfy a linear equation. Write the linear
equation
6 -6
2
1/
6
Answers
Answer:
2
Hence, the required area = 8 sq. units.
x 4x
2
4x 4 = 8 sq. units.
EXERCISE 4.3
1. Draw the graphs of following linear equations :
(1) 2x + y = 3
(ii) 2x - y = 6
INCERT)
(ii) 4x - 3y = 7
(iv) 20x + 25y = 200
2. Draw a graph of the line x = 2y + 3. From its graph, find the
) value of y when x=-5
(ii) value of x when y = 0
3. Draw the graphs of the following equations. Use each graph to check whether the point indicated
against each equation is a solution or not.
(1) 45. + 3y = 2; x=-4, y = 6
(ii) 5y - 2x = 0; x = 15, y = 6
(iii) - x + 3y = 5; x = 2, y = 1
4. Show that the points A(1, 2), B( - 1, - 16) and Co, - 7) lie on the graph of the linear equation
INCERT EXEMPLAR]
y=9x - 7.
5. Draw the graph of each of the following equations and find the point where the line intersects
x-axis.
(i) x - y = 2
(ii) y = 3x
INCERT
6. The following observed values of x and y are thought to satisfy a linear equation. Write the linear
equation
6 -6
2
1/
6