KCET2013MathematicsStraight Lines

If the line 6 x-7 y+8+ (3 x-y+5)=0 is parallel to y -axis, then is equal to

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Correct answer

A. -7

Step-by-step solution

Given line is array rr & 6 x-7 y+8+ (3 x-y+5)=0 & (6+3 ) x-(7+ ) y+(8+5 )=0 & (7+ ) y=(6+3 ) x+(8+5 ) & y= 3( +2) ( +7) x+ ( 8+5 7+ ) & Slope of the line (m)= 3( +2) ( +7) array Since, line is parallel to y -axis. array ll & m= = 1 0 & 3( +2) +7 = 1 0 & +7=0 & =-7 array

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