Toh graph e x axis er negative dike 45 degree angle deya chilo a=-w^2x Y= -mx er sathe tulona kore uni a=tan135 x boshiyenchen amr question hocche j uni ki -m=tan135 boshiyechen??? Jdi 45 diye Kori tahole kivabe hobe??? Amr confusing lagteche j -m=tan135 naki m=tan135? Can YOU solve this