9x-5y=2>9x-5y=2===>(+)7y=-28=>y=-4=>(1)3x-4(-4)=10=>x+16=20=>x=4
3x-4y=10(1)=>(Γ-3)-9x+12y=-30=>(+)
4th option is correct xy=-10
if this was to u plzz mark me the brainliest