The diagram below shows part of the graph of the equation y=[tex]2x^{2}+ax+b.[/tex] the graph intersects the x-axis at the points [tex](-\frac{7}{2}, 0) and (2,0)[/tex]. Find the value of a and the value of b

The diagram below shows part of the graph of the equation ytex2x2axbtex the graph intersects the xaxis at the points texfrac72 0 and 20tex Find the value of a a class=