Question

Which coefficient in the function tells us that the parabola for the function will point downward? y = -2x2 + 5x - 4

Answer 1

answer choices
a. -2
b. 5
c. -4

Answer 2

-2x^2
-2x^2 = a, + 5x = b, - 4 = c
a tells us the direction, if its negative, the parabola moves downward, positive moves upward.
so the answer would be a. -2

Answer 3

did you get it @gabbie96

Answer 4

i usually just graph it and bring up a table on my graphing calculator but heatdude is right.

Answer 5

Yes Thank you so much! @HeatDude

Answer 6

no problem:)