Answer:
slope: 
equation: 
Step-by-step explanation:

- point-slope form of Equation of the Line

Answer:
-4
Step-by-step explanation:
3+1 = 4 so just put a dash at the start and you ger -4
Answer:
21/2
Step-by-step explanation:
10.5 is correct, but that's a decimal
21/2=10.5
Answer:
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Step-by-step explanation:
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Answer:
-5, multiplicity 3; +9, multiplicity 2; -1
Step-by-step explanation:
The roots of f(x) are those values of x that make the factors be zero. For a factor of x-a, the root is x=a, because a-a=0. If the factor appears n times, then the root has multiplicity n.
f(x) = (x+5)^3(x-9)^2(x+1) has roots ...
- -5 with multiplicity 3
- +9 with multiplicity 2
- -1