Question

find the value of a&b if the lines 2ax -5 by = 1 & 6ax + 2 by =-3 passing through (1,-1)​

Answer 1

Answer:

(a,b)=(-13/34,6/17)

Step-by-step explanation:

the lines are passing through (1,-1)

so the value of x=1 & y=-1

(1)...=2a*1-5*-1b=1 =>2a+5b=1

(2)...=6a-2b=-3

(1)*3-(2)

=>6a+15b=3

6a-2b=-3

(-) (+) (+)

_____________

17b=6

b=6/17

(2)...=>6a-2*6/17=-3=>6a=-3+12/17=-39/17=>a=-39/102=-13/34

(a,b)=(-13/34,6/17)

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