Equation of a Straight Line in Various Forms

IMPORTANT

Equation of a Straight Line in Various Forms: Overview

This topic covers concepts, such as, Slope of a Line, Finding Slope of a Line Passing through Two Points, Equation of Straight Line through Given Two Points in Determinant Form & Equation of Straight Line in Parametric Form etc.

Important Questions on Equation of a Straight Line in Various Forms

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IMPORTANT

The straight-line equationy=x3+14 cuts y- axis at the point

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IMPORTANT

The equation of the image of the line x+2=0 with respect to x=0 is

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If a line passes through point A(0,c) and has gradient 'm' then the equation will be:

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IMPORTANT

If the straight line drawn through the point P32  and inclined at an angle π 6 with the x-axis meets the line 3x-4y+8=0 at Q Find the length PQ.

HARD
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A line cuts the x-axis at   A(7,0)  and the y-axis at  B(0,5).  A variable line PQ is drawn perpendicular to AB cutting the x-axis in P and y axis in Q. If AQ and BP intersect at R, find the locus of R.

HARD
IMPORTANT

A line through   A(5,4)  meets the line   x+3y+2=0,2x+y+4=0  and   xy5=0  at the points   B,CandD  respectively. If   ( 15 AB ) 2 + ( 10 AC ) 2 = ( 6 AD ) 2 , find the equation of the line.

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A vertex of an equilateral triangle is (2,3)  and equation of the opposite side is x+y=2. Find the equation of the other sides of the triangle.

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Use concept of slope to prove following points are collinear.

0,2,1,5,-2,-4 & -6,-16

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Use concept of slope to prove following points are collinear.

4,2,5,4,2,-2 & 3,0

EASY
IMPORTANT

Use concept of slope to prove following points are collinear.

4,8,5,12,9,28 & 11,36

MEDIUM
IMPORTANT

The equations of sides AB¯, BC¯ and CA¯ of a triangle ABC are 2x+y=0, x+py=q and x-y=3 respectively. If P(2, 3) is its orthocenter, then the value of p+q equals

EASY
IMPORTANT

Use concept of slope to prove following points are collinear.

5,-2,4,-1,1,2 & 3,0

EASY
IMPORTANT

Use concept of slope to prove following points are collinear.

0,2,1,5,-2,-4 & -6,-16

EASY
IMPORTANT

Use concept of slope to prove following points are collinear.

4,2,5,4,2,-2 & 3,0

EASY
IMPORTANT

Use concept of slope to prove following points are collinear.

4,8,5,12,9,28 & 11,36

EASY
IMPORTANT

Use concept of slope to prove following points are collinear.

0,3,1,5,-2,-1 & -4,-5

MEDIUM
IMPORTANT

In the xy-plane, how many straight lines whose x-intercept is a prime number and whose y-intercept is a positive integer pass through the point (4, 3)?

MEDIUM
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The equation y=±3x, y=1 are the sides of

MEDIUM
IMPORTANT

The equation of a plane which passes through 2,-3, 1 and is normal to the line joining the points 3,4,-1 and 2,-1,5 is given by

EASY
IMPORTANT

If the points 1,0,0,1 and x,8 are collinear, then the value of x is equal to