Question

without trying the graph of the equation determine how many points the parabola has in common with the x-axis and the weather is vertex lies above on or below the x-axis.

y=2x^2+x-3

Answer 1

@texaschic101

Answer 2

@greenlegodude57

Answer 3

@rose21

Answer 4

Parabola crosses x-axis twice at (-1.5, 0) and (1, 0)
And the vertex lies below the x-axis.

Answer 5

What about y=x^2-12x+12

Answer 6

Parabola crosses x-axis twice at (1.1, 0) and (10.9, 0)
And the vertex lies below the x-axis.