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Algebra 2 Formulas and Vocabulary
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Algebra 2 Formulas and Vocabulary
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25 Questions

1.
This is

2.
If AB=0, then A=0 or B=0.

3.
Lines are perpendicular if and only if they have negative reciprocal slopes.

4.
√ab = √a * √b

5.
Line through the widest part of an ellipse. '2a' units long.

6.
y=f(x), the value of the function when x is a certain value.

7. A=Pe^rt
-A=amount of money after 't' years
-P=principal (original amount of money)
-r=interest rate (written as a decimal)

8.
log(e) x written as ln x

9.
√(a/b) = (√a) / (√b)

10.
Where a function crosses the x-axis.

11.
h(t)=-16t^2+vt+s
-h=height of object (feet)
-t=time (seconds)
-v=initial velocity of object (ft/sec)
-s=initial height of object (feet)

12. -The vertex is (-b/2a , f(-b/2a))
-The axis of symmetry is x=-b/2a
-The y-intercept is C
-If a > 0, the parabola opens up
-If a < 0, the parabola opens down
-If |a| > 1, the parabola is thinner than the parent
-If |a| < 1, the parabola is wider than the parent

13. -'i'='i'
-'i^2'=-1
-'i^3'='-i'
-'i^4'=1
-'i^5'='i'
-'i^6'=-1
-'i^15'=-1
-'i^34'=-1

14. y=a|x-h|+k
-a=rate of change
-(h,k)=vertex

15.
Solutions (also see 'Root / X-Intercept / Zero')

16.
This is

17.
Lines are parallel if and only if they have the same slope.

18.
A mapping, or pairing, of input values with output values.

19.
Operator to the square root.

20. The width of the parabola at the focus. The width is 4p.

21. The endpoints of the transverse axis of the hyperbola.

22.
component of mathematical expression

23.
Set of all input values.

24.
The inverse of a function 'f' is also a function if and only if no horizontal line intersects the graph of 'f' more than once.

25.
A regular oval shape, traced by a point moving in a plane so that the sum of its distances from two other points is constant, or resulting when a cone is cut by an oblique plane which does not intersect the base.

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