Question

Find the value of p that makes the linear graph y=p-3x pass through the point where the lines 4x-y=6 and 2x-5y=12 intersect.

Answer 1

@Psymon

Answer 2

@Compassionate

Answer 3

Hi,
first make 2 equations from 4x - y = 6 and 2x -5y =12...
4x - y = 6 ------(1)
2x - 5y = 12 -----(2)
Now ..
solve them taking them as a system of equation ... and the values u get by solving them r coordinates of the intersection point of those 2 lines..

(2) x 2
4x -10y =24 -----(3)
(3) - (1),
4x -y - [ 4x -10y ] = 18
9y = 18
y = 2
and substitute y = 2 in (1),
4x - y = 6
4x = 6+y
4x = 8
x = 2

So ... the intersection point of those 2 lines r (2,2)

now if the function y = p-3x passes through that lpoin then the co-ordinates (2,2) should satisfy the function..
which mean..
2 = p - (3x2)
p = 8

yep !! that's it..
Hope this will help ya!!!

Answer 4

Did ya get it XD ?

Answer 5

wait let me process it all in lol:p

Answer 6

sure...ya can take ur time !!lol

Answer 7

I got y=-2 in the points

Answer 8

@***[ISURU]***