for what value of k the pair of linear equations 2x -3y + 10 = 0 and 3 X + KY + 15 = 0 represents coincident lines ______
Answers
Answered by
0
Answer:
ans = 4
Step-by-step explanation:
x+2y+7=0 and 2x+ky+18=0 do not intersect each other, this means that the pair of equations is inconsistent.
On comparing x+2y+7=0 with a
1
x+b
1
y+c
1
=0 and 2x+ky+18=0 with a
2
x+b
2
y+c
2
=0 we get,
a
1
=1,b
1
=2,c
1
=7,a
2
=2,b
2
=k,c
2
=18
Thus, we have
a
2
a
1
=
b
2
b
1
⇒
2
1
=
k
2
⇒k=4
Hence, if k=4 then the pair of equations will be inconsistent.
Answered by
0
Answer:
the answer u want is -9/2
Step-by-step explanation:
hope it's help u
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