Q.) The equation of line passing throgh the points (1,-1) and (3,-2) is given By______?
a) 2x + y + 1 = 0
b) 2x + y + 2 = 0
c) x + y + 1 = 0
d) x + 2y + 1 = 0
Thanxxx in Advence...
Tejaswi Kasturi
(student-cpt)
(427 Points)
Replied 12 June 2012
just substitute both the points in the eqn and see which equation satisfies only the last line passes through the first point and the eqn also satisfies second point(passes through it) (1+2*(-1)+1=0 and 3+2*(-2)+1=0) hence d is the answer this is much easier to do than writing the formula for two points
Mihir Manohar
(CA Final - Article Assistant)
(474 Points)
Replied 25 June 2012
ya thats true... shortcut can be applied. And also the Slope Concept can be followed.
Rohit
(CA-IPCC)
(75 Points)
Replied 30 June 2012