Use the quadratic equation y = x^2 – 6x + 9.
where does the vertex of the parabola lie?
a. below the x-axis
b. on the x-axis
c. on the y-axis
d. above the x-axis
calculate the discriminant to determine the number of real roots.
y = x^2 + 3x + 9
how many real roots does the equation have?
a. one real root
b. no real roots
c. two real roots
d. no solution to the equation