What is this symbol?"
H
high pressure
low pressure
heavy rain
hot

sir that is high pressure

if you did her your teacher then here I will help

the H mean h for high and the L is the l for low ok

the image is given below

since the options are not given so we draw it from the equation

the given equation is

y = (x-1) (x+4)

y = y² + 3x - 4

the above equation is a quadratic equation which will have two roots. if we draw the graph for it, it will look like this