ice is placed around a bowl of water to lower the temperature. The equation =−75+22 shows the time, t, measured in minutes and temperature, D, measured in degrees Celsius. Which statement is correct?

In a quadratic function of the form ax^2+bx+c, which of the following is not true? a. the y-intercept is c. b. if a is positive, the parabola opens up. c. the vertex has an x-coordinate of -b/2a. d. the axis of symmetry is the line y=-b/2a.