Question

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

Answer 1

Answers:

a) -2

b) 5

c) -4

Answer 2

This is the graph of your function:

https://www.wolframalpha.com/input/?i=y+%3D+-2x^2+%2B+5x+-+4+graph

y = x^2 + 5x - 4

https://www.wolframalpha.com/input/?i=y+%3D+x^2+%2B+5x+-+4+graph

y = -2x2 + 5x - 4

https://www.wolframalpha.com/input/?i=y+%3D+-2x^2+%2B+x+-+4+graph

y = -2x2 + 5x + 0

https://www.wolframalpha.com/input/?i=y+%3D+-2x^2+%2B+x+%2B+0+graph

Answer 3

notice how the function changes when each coefficient is removed

Answer 4

I like how people on here skip the more difficult questions.

Answer 5

what are you talking about?