Question

Use the quadratic equation y=x2+3x-10. where does the vertex of the parabola lie

Answer 1

 y = x² + 3x - 10
a=1   b=3   c=-10

x = -b/2a = -3/2 = -1.5

y = (-1.5)² + 3(-1.5) - 10 = 2.25 - 4.5 - 10 = - 12.25

(-1.5, -12.25)  ← vertex of the parabola