Question 1: In which quadrant do the following points lie?

I. (6, 3)

II. (-8, 4)

III. (8, -7)

IV. (-5, -9)

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The table given below provides details about the signs of the abscissa (x-coordinate) and ordinate (y-coordinate) in the four quadrants in the x-y plane.

Quadrant | Abscissa x-coordinate | Ordinate y-coordinate |
---|---|---|

I Quadrant | + | + |

II Quadrant | (-) | + |

III Quadrant | (-) | (-) |

IV Quadrant | + | (-) |

**(i) (6, 3) **

Abscissa (x – cordinate) and ordinate (y – coordinate) are both positive.

Therefore (6, 3) lies in the __first quadrant__.

**(ii) (-8, 4) **

Abscissa (x – cordinate) is negative and ordinate (y – coordinate) is positive.

Therefore (-8, 4) lies in the __second quadrant__.

**(iii) (8, -7) **

Abscissa (x – cordinate) is positive and ordinate (y – coordinate) is negative.

Therefore (8, -7) lies in the __fourth quadrant__.

**(iv) (-5, -9) **

Abscissa (x – cordinate) and ordinate (y – coordinate) are both negative.

Therefore (-5, -9) lies in the __third quadrant__.

Class 9 Maths

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