An Important Question of M.L Aggarwal book of class 10 Based on Equation of a Straight Line Chapter for ICSE BOARD.
Here equation of the line PQ is given.
You have to find the slope of the line PQ and calculate the angle that the line PQ makes with the positive direction of x-axis
This is the Question Number 08 Exercise 12.1 of M.L Aggarwal.
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The equation of the line PQ is 3y – 3x + 7 = 0 (i) Write down the slope of the line PQ , (ii) Calculate the angle that the line PQ makes with the positive direction of x-axis.
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Given, equation of line PQ is 3y – 3x + 7 = 0
Re-writing in form of y = mx + c, we have
3y = 3x – 7
⇒ y = x + (-7/3)
Here,
(i) Slope = 1
(ii) As tan θ = 1
θ = 45o
Hence, the angle which PQ makes with the x-axis is Q.