$\"\"$

The x - intercepts are $\"\"$ .The equation for the quadratic function that opens upward and contains x - intercepts are $\"\"$ is $\"\"$ .

$\"\"$ (Substitute a for $\"\"$ and b for 5)

$\"\"$ (Formula: $\"\"$ )

$\"\"$ (Simplify) $\"\"$

The equation for the quadratic function that opens downward and contains x - intercepts are $\"\"$ is $\"\"$ .

$\"\"$ (Substitute a for $\"\"$ and b for 5)

$\"\"$ (Formula: $\"\"$ )

$\"\"$ (Simplify) $\"\"$

The equation for the quadratic function that opens upward is $\"\"$ and the equation for the quadratic function that opens downward is $\"\"$ .