Saturday, 27 October 2012

Find the Equation of the line AB when it meets x-axis at (-3,0) with slope = -2

Find the Equation of the line AB when it meets x-axis at (-3,0) with slope = -2 Sol : Normal 0 false false false EN-US X-NONE X-NONE ...

Friday, 26 October 2012

Find the Equation of the line which is passing through the point (0,0) with slope m.

Sol : Normal 0 false false false EN-US X-NONE X-NONE ...

Tuesday, 23 October 2012

Find the Equation of the line which is passing through (-4,3) with slope 1/2

Find the Equation of the line which is passing through (-4,3) with slope 1/2 Sol : We know that Equation of line will be (y-y1) = m(x-x1) when slope of line and a point is given. Normal 0 false false false EN-US X-NONE X-NONE ...

Write the equations for x and y-axis.

Write the equations for x and y-axis. Sol : Equation of x-axis is y = 0. and Equation of y-axis is x = 0...

Sunday, 21 October 2012

If three points (h.0),(a,b) and (0,k) lie on line, show that a/h+b/k=1

Q.No. 13 of Exercise 10.1 of Class 11th If three points (h.0),(a,b) and (0,k) lie on line, show that a/h+b/k=1. Sol : Let,     The given points are A(h,0), B(a,b), C(0,k)    These points lie on the same line Therefore,         Slope of AB = Slope of BC. Here,  Slope of AB = b-0/a-h = b/a-h Slope of BC = k-b/0-a = k-b/-a Now               b/a-h = k-b/-a Or           ...

Thursday, 18 October 2012

The Slope of a line is double of the slope of another line. If tangent of the angle between them is 1/3, find the slopes of the line.

Q.No. 11 of Exercise 10.1 of Class 11th The angle between x-axis and the line joining the points A(3,-1) and (4,-2). Sol : Let Normal 0 false false false EN-US X-NONE X-NONE ...