Tentukan sumbu simetri dan nilai optimum dari grafikY=-3/4x²+7x-18 ​

a = -3/4 b = 7 c = -18

sumbu simetri

= -b/2a

= -7/(2(-¾))

= 7/(3/2)

= 14/3

nilai Op

= -D/4a

= – (49 – 54)/-3

= -5/3