Which of the following is true based on the graph of the quadratic? (1 point) Responses The a-value is negative. The a -value is negative. The c-value of the equation in standard form is −1 . The c -value of the equation in standard form is negative 1 . The c-value of the equation in standard form is −10 . The c -value of the equation in standard form is negative 10 . The vertex is located at (3,−10)