Question

solve the simultaneous equations 3x-y=5, 4x-3y=-1. hence, find p, if y=px-3.
(substitution method)​

Answer 1

by solving the two equations we get

ans p=19/8

Answer 2

Answer:

GIVEN :

The equations are 3x-y=5, 4x-3y=-1. Hence find p, if y=px-3​

TO FIND :

The value of p in the given equation y=px-3​

SOLUTION :

Given equations are 3x-y=5, 4x-3y=-1

To  find p, if y=px-3​ :

Let the equations

and

Now put y=px-3 in equations (1) and (2)

(1) ⇒ 3x-(px-3)=5

3x-px+3=5

(2) ⇒ 4x-3(px-3)=-1

4x-3px+9=-1

Now multiply the equation (3) into 3 we get

Subtracting the equations (4) and (5)

4x-3px=-10

9x-3px=6

(-)_(+)__(-)________

-5x=-16

5x=16

∴  

Substitute the value  in equation (1)

∴  

Substitute the values  and  in equation y=px-3 we get

38=16p

Rewritting as 16p=38

∴  

∴  the value of p is  if y=px-3.

Step-by-step explanation: