Question

For what value of k will the following pair of linear equations represent parallel lines?
2x - 7y = 21
4x + ky = 16
Pls fast

Answer 1

Step-by-step explanation:

a1/a2=b1/b2 is not equal to c1/c2..

such that,

2/4=7/k

1/2=7/k

Therefore,

k=14

Answer 2

Answer:

with slope formula you can get Answer=14

Step-by-step explanation:

for first equation :slope=-a/b

=-2/-7

=2/7

for second equation :slope=-4/k

if two equation are parallel :slope of first equation=slope of second equation

2/7=-4/k

1/7=-2/k

1/k=1/-14

k=14