Question

6. Where does the line Sr-8y=- 7 intersect the y-axis?
1.
7. Does the pair of linear equations 2x+5y = 3 and 6x + 15y
= 12 represent coincident lines?​

Answer 1

Step-by-step explanation:

Given lines are 2x+5y=3 and 6x+15y=12

2x+5y=3=>2x+5y-3=0

a1=2; b1=5; c1=-3

and

6x+15y=12

=>3(2x+5y)=3×4

Cancelling 3 on both sides

= 2x+5y=4

=>2x+5y-4=0

a2=2; b2=5; c2=-4

a1/a2=2/2=1

b1/b2=5/5=1

c1/c2=-3/-4=3/4

a1/a2=b1/b2≠c1/c2

Given lines are not coincident lines.

They are inconsistent lines or Parallel lines with no solution.