Question

solve graphically 3x-5y+1=0,2x-y+3=0​

Answer 1

3x-5y+1=0 ---------(1)

2x-y+3=0 ----------(2)

multiplying eqn (2) by 5 we get

10x-5y+15=0 ---------(3)

subtracting eqn (3) from eqn (1) , we get

(3x-5y+1) - (10x-5y+15) =0-0

3x-5y+1-10x+5y-15=0

-7x-14=0

-7x=14

x = -2

putting the value of x = -2 in eqn (2) we get

2 (-2)-y+3=0

-4-y+3 =0

-y-1=0

-y=1

y = -1

x = -2 and y = -1