Question

Using the equation, y=5x²−17x −12, determine whether the parabola opens upward or downward.

Answer 1

opens upwards

Explanation:

given a quadratic in standard form

y = ax² + bx + c ( a ≠ 0 )

• if a > 0 then parabola opens upwards

• if a < 0 then parabola opens downwards

given

y = 5x² - 17x - 12

with a = 5 > 0

then parabola opens upward