# If the equation #ax^2-6xy+y^2+bx+cy+d=0# represents a pair of straight lines whose slopes are #m# and #m^2#, then value(s) of a is/are?

##
A) #a=-8#

B) #a=8#

C)#a=27#

D)#a=-27#

A)

B)

C)

D)

##### 1 Answer

Oct 9, 2017

See below.

#### Explanation:

Assuming that the formula reads

Given that

we have comparing coefficients.

then