RUZIHAN ABDULLAHSMK PUTERI, SEREMBAN

COORDINATE

GEOMETRY

COORDINATE

GEOMETRY

FORM 4FORM 4www.ruzihan.wordpress.com

RUZIHAN ABDULLAHSMK PUTERI, SEREMBAN

Equation of straight line

Equation in gradient1

Equation in the general form2

Equation in the intercept form 3

The equation of a straight line can be expressed in three forms

Equation in the gradient form

m= gradientC=y-intercept

Equation in the general form

Equation in intercept form

a=x-interceptb=y-intercept

Example 1

Find the equation of thestraight line that passesthrough the point (3,-2) andhas gradient of 1has gradient of 1

4

Solution

Example 2

Find the equation of a straightline that passes through theline that passes through thepoint (-2,-3) and (-4,7).

Solution

Example 3

The x-intercept and y-interceptof the straight line MN are 4and 3 respectively. State theand 3 respectively. State theequation of the straight line MNin the intercept form

Solution

The equation of the straight lineMN is

Intercept form

Exercise

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