2. If the discriminant of -2x^2+ 3x - 5 = 0 is -31, what does this tell you about the graph of the parabola?

If the discriminant is negative, that means that the roots of the quadratic function are not real numbers. In other words, the graph has no x-intercepts

it is a. 4.2 because 7.6-3.4 gets the remaining length of 4.2. i might be wrong but i am pretty sure this is the answer.

i think that you should ask google for the answer to that problem because if we don't know it google does