15

Q1. A line graph is called as:

• Bar graph
• Linear graph
• Pie graph
• None of these

Solution

A line graph is called as linear graph.

Q2. Which of the following points lie on the graph of "y = x"?

• (1, 2)
• (2, 1)
• (2, 2)
• (0, 1)

Solution

(2, 2) lies on the graph of y = x as x = 2 and y = 2 i.e., x = y

Q3. Points (-1,2), (-4,7),(-3,1) and (-2,4) lie in.

• I quadrant
• II quadrant
• III quadrant
• IV quadrant

Solution

All the points (-1,2), (-4,7),(-3,1) and (-2,4) have x coordinate with negative sign (x < 0) and y coordinate with positive sign (y > 0)And the coordinates of II quadrant are of the form x < 0 and y > 0.

Q4. Which of the following does not give a linear graph?

• y = x
• y = 3
• y = 9x + 1
• y = x²

Solution

y = x² does not give a linear graph as the graph is not a straight line.

Q5. A linear graph is given by the relation "y = 5x + 2". If x = 2, the value of y will be:

• 10
• 12
• 14
• 16

Solution

y = 5x + 2 If x = 2, then y = 5(2) + 2 = 12

Q6.  Point (-3,-5) lies in the ______ quadrant.

• First quadrant
• Second quadrant
• Third quadrant
• Fourth quadrant

Solution

The given point lies in third quadrant since both the coordinates are negative.

Q7. The coordinates of a point (-x, -y) lies in the

• First quadrant
• Second quadrant
• Third quadrant
• Fourth quadrant

Solution

The coordinates of a point (-x, -y) lies in the third quadrant.

Q8. A linear graph is given by the relation "y = 2x + 5". Find the value of y if the value of x is 3.

• 9
• 10
• 11
• 14

Solution

At x = 3, y = 2(3) + 5 = 6 + 5 = 11.

Q9. By joining the points (0, 0), (1, 1), (2, 2) and (3, 3) we get

• A curved line
• A straight line
• A parallelogram
• A square

Solution

A straight line.

Q10. A linear graph is given by the relation y = 3x + 6. Find the value of y if the value of x is 5. 

• 3
• 15
• 18
• 21