Which is the best estimate of the average rate of change for the function graphed, over the interval 1 ≤ x ≤ 3

Write the following as a base and exponent

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

Graph the equationy= x+3[tex]y = x + 3[/tex]