Question 1(Multiple Choice Worth 1 points)
2 answers:
If you can't tell "by inspection" or by computing the change in y (-16) divided by the change in x (4) as -4, then you can always check to see which of the equations predicts the proper value for y.
1) (1/4)*(-4) = -1, not 16
2) 4*(-4) = -16, not 16
3) (-1/4)*(-4) = 1, not 16
4) -4*(-4) = 16 . . . . as required
The 4th selection is appropriate.
1) (1/4)*(-4) = -1, not 16
2) 4*(-4) = -16, not 16
3) (-1/4)*(-4) = 1, not 16
4) -4*(-4) = 16 . . . . as required
The 4th selection is appropriate.
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Answer:
Step-by-step explanation:
To find the real zeros you must match the function to zero and factor the expression.
We have a polynomial of degree 3.
We try to group the terms to perform the factorization
Now we take (x + 4) as a common factor
If we have an expression of the form we know that this expression is equivalent to:
In this case
So:
Finally:
The solutions are: