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Coordinate Geometry

Q & A

**Q1: Write the name of the point where both axes intersect?**

Answer: Origin

**Q2: In which quadrant(s), ordinate of a point is negative?**

Answer: III and IV

**Q3: If the cooridnates of of two points P(-2,3) and Q(-3, 5), then find (abscissa of P) - (abscissa of Q)**

Answer: = (-2) - (-3) = -2 + 3 = 1

**Q4: Plot the points A (-4,4), B (4,4) and C (0,0). Join AB, AC and BC and name the geometrical figure obtained.**

Answer: A triangle.

**Q5: The**

**abscissa**

**and ordinate of a point are –3 and –5 respectively then write down the ordered pair.**

Answer: P(-3, -5)

**Q6: From the figure below, answer the following:**

ⅰ Co-ordinates of Point C

ⅱ Abscissa of Point E

ⅲ Coordinates of Point A

ⅳ Ordinate of point B

ⅴ Which points have abscissa 0.

ⅵ Quadrant in which Point C lies

ⅶ Perpendicular distance of Point F from x-axis

ⅷ Points which has same value of x-coordinate

Answer:

ⅰ -4, -3

ⅱ 3

ⅲ 0,0

ⅳ -3

ⅴ A and G

ⅵ III Quadrant

ⅶ 2 units

ⅷ A and D

**Q7: What is the name of each part of the plane formed by these two lines?**

Answer: Quadrant

**Q8: In which quadrant, do the following points lies?**

**A (3, 7),**

**B (–9, –6),**

**C (10, 15)**

**D (–5, 9)**

Anaswer:

A IVth quadrant

B IIIrd quadrant

C Ist quadrant

D IInd quadrant.

**Q9: Write the mirror image of the point S(–5, 7) by using x-axis?**

Answer: (–5, –7)

**Q10: State whether the following statements are true / false .**

ⅰ (5, 7) is a point in the IV quadrant.

ⅱ (-2, -7) is a point in the III quadrant.

ⅲ (8, -7) lies below the x-axis.

ⅳ (5, 2) and ( - 7, 2) are points on the line parallel to y-axis.

ⅴ (-5, 2) lies to the left of y-axis.

Answer:

ⅰ False

ⅱ True

ⅲ True

ⅳ False (parallel to x-axis)

ⅴ False

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