Question

What polynomial has a graph that passes through the given points?

(-2, 2) (-1, -1) (1, 5) (3, 67)




A. y = -x3 + 4x2 + 2x - 2


B. y = x3 + 4x2 + 2x - 2


C. y = x4 + 4x3 + 2x2 - 2x


D. y = x3 - 4x2 - 2x - 2

Answer 1

Plug in the x-values and see which one gives the corresponding y-values.

Answer 2

c?

Answer 3

Try the easy point first. That is, (1,5).
Put x = 1 in each and see which ones gives you 5

Answer 4

After that try (-1, -1).

Answer 5

ok ok thank you give me one min please

Answer 6

oh its A? because i got y=5?

Answer 7

Try (1,5):
A. y = -x3 + 4x2 + 2x - 2
x = 1: -1 + 4 + 2 - 2 = 3 (Not 5. So ruled out)
B. y = x3 + 4x2 + 2x - 2
x = 1: 1 + 4 + 2 - 2 = 5 (possibly his one)
C. y = x4 + 4x3 + 2x2 - 2x
x = 1: 1 + 4 + 2 - 2 = 5 (possibly his one)
D. y = x3 - 4x2 - 2x - 2
x = 1: 1 - 4 - 2 - 2 = -7 (Not 5. ruled out)

Answer 8

b!

Answer 9

It is either B or C. Try (-1, -1)
B. y = x3 + 4x2 + 2x - 2
x =-1: -1 + 4 - 2 - 2 = -1 (possibly his one)
C. y = x4 + 4x3 + 2x2 - 2x
x = -1: 1 - 4 + 2 + 2 = 1 (Not -1. ruled out).

So it is B.

Answer 10

What is a quartic function with only the two real zeros given?

x = -4 and x = -1
@aum

Answer 11

x = -4 and x = -1




A. y = x4 + 5x3 + 5x2 + 5x + 4


B. y = x4 - 5x3 - 5x2 - 5x - 4


C. y = -x4 + 5x3 + 5x2 + 5x + 4


D. y = x4 + 5x3 + 5x2 + 5x - 5

\i think d