Question

Are y=3x+7 and y=3x−8 parallel to each other?

Answer 1

Answer:YES

SINCE a1/a2 = B12/B2

Answer 2

for the line to be parallel to each other,

$\frac{a1}{a2 } = \frac{b1}{b2} \\ but \: it \: \: should \: not \: be \: equal \: to \: \frac{c1}{c2}$

a1 = 3

a2 = 3

b1 = 1

b2 = 1

c1= 7

c2 = -8

we can clearly see that,

$\frac{a1}{a2} = \frac{b1}{b2} = 1$

and they are not equal to c1/c2

So, the line are parallel