Determine whether the graph of y = 2x2 − 3x − 17 opens up or down and whether it has a maximum or minimum point.

Question

anonymous · Answer

Up; Maximum
Up; Minimum
3
Down; Maximum

stamp · Answer

The sign +/- of the x^2 term determines whether the graph opens up or down.

The maximum or minimum point is determined by whether the graph opens up (minimum) or down (maximum)

stamp · Answer

The extrema, aka max or min, of a quadratic equation ax^2 + bx + c  is at the point x = -b/2a

anonymous · Answer

up minimum?

stamp · Answer

Yes

stamp · Answer

View the graph of 2x^2 -3x - 17 @ http://www.wolframalpha.com/input/?i=y+%3D+2x^2+%E2%88%92+3x+%E2%88%92+17+

stamp · Answer

Notice the features we described; the parabola opens up and has a minimum in the lower right quadrant

anonymous · Answer

ok thnx