Question

Shown below are the graphs of the lines y-2x=0, x+y=6andpx+qy=r.​

Answer 1

Answer:

x = 4 , y = 2

Step-by-step explanation:

It is because the lines i.e x + y = 6 and px + qy = r intersect at the (4,2) as shown in the graph

Answer 2

Answer:

value of (x , y) = (2 , 4) and third equation is  2p + 4q = r

Step-by-step explanation:

given three equation are:

y - 2x = 0

x + y = 6 and

px + qy = r

from first equation; y = 2x

substitute value of y = 2x in second equation:

x + ( 2x ) = 6

3x = 6

x = 6/3 = 2

value of y = 2x = (2)(2) = 4

third equation turns out to be:

(p)(2) + (q)(4) = r

2p + 4q = r