Question

1)On comparing the ratios ,Find out whether the following pair of linear equations 9x+3y=-12 , 18x+6y= -24


1) intersect at a point

2) are parallel

3) are coincident​

Answer 1

Answer:

2)they are parallel

Step-by-step explanation:

if we multiple in first equation then equation first =equation second

Answer 2

Answer:

the given pain of linear equations are coincident.

Step-by-step explanation:

9x+3y= -12, 18x+6y= -24

we can write,

9x+3y+12=0, 18x+6y+24=0

A1= 9, B1= 3, C1= 12

A2= 18, B2= 6, C2= 24

A1/A2=9/18=1/2,

B1/B2= 3/6=1/2,

C1/C2=12/24=1/2.

i.e.

A1/A2=B1/B2=C1/C2

so, the given pair of linear equations are coincident.