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9th Class Chapter No 22 - Coordinate Geometry in maths for ICSE

In linear equation of the form :  3x + y = 5, x – 3y + 8 = 0, x = 5y – 8 etc.  The letters ‘x’ and ‘y’ are called variables.
a.  If a linear equation in x and y is expressed with y as the subject of the formula (equation) y is called the dependent variable and x is called the independent variable. In each of the following equations , y is the dependent variable and x is the independent variable
 (i) y = 3x – 6 (ii) y = 5 (iii) y = 2 (x – 5) + 7

The value of y depends on the value of x, so y is said to be dependent variable and

x is said to be independent variable.

  1. If a linear equation in x and y is expressed with x as the subject of the formula , x is called the dependent variable and y is called the independent variable.  In each of the following equations, x is the dependent variable and y is the independent variable.
    (i) x = 5y – 6 (ii) x = 5 – y4y4(iii) x = 3 (y – 8) + 7
    The value of x depends on the value of y, so x is said to be dependent variable and y is said to be independent variable

An ordered pair is the pair of two objects which occur in a particular order i.e. in which the order of objects is important

Posted in 9th on July 08 2020 at 10:09 PM

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