Question

Does y=-4+3x^2 open upwards Or downwards

Answer 1

Answer:

Upwards

Step-by-step explanation:

The general form of a quadratic is  $y=ax^2+bx+c$

We can tell whether the curve opens upward or downward by the sign of "a"

If

• a is positive, the curve opens upward
• a is negative, the curve opens downward

Reaaranging the given equation:

$y=-4+3x^2\\y=3x^2-4$

Here, we see that a  is positive, so the curve opens Upward