Q4 of 23 Page 230

The x coordinate of a point on the slanted (blue) line in the picture is 3.


i) What is its y coordinate?


ii) What is the slope of the line?


iii) Write the equation of the line.

(i) Let the y coordinate be a


tan 600


⇒ a = 2√3


The y coordinate is 2√3


(ii) Slope = tan 600


⇒ Slope of line = √3


(iii) Equation of line:


y - 0 = √3(x - 1)


⇒ √3x - y - √3 = 0


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