Last question please help me

Which representation has a constant of variation of -2.5

It is given that the quadratic equation hx²-3x+k=0, where h and k are constants, has roots [tex] \beta \: and \: 2 \beta [/tex]express h in terms of k

Describe the symmetry of the figure. identify lines of symmetry, if any. find the angle and the order of any rotational symmetry.