Equations
& Expressions
Functions & Non functions
Solving Formulas
The Language of
Algebra
Miscellaneous Q's
100
solve for (r): A=πr^2
r = √(A/π)
100
Let y be a function of x as follows: y = 3x² Which is independent, which is dependent ?
x is the independent variable, y is the dependent.
100
Solve the original formula, T ÷ D = Z ,for T
T= Z·D
100
What is a Variable ?
A symbol that can be replaced by any member of a set of numbers or other objects
100
Is this formula explicit or recursive ? t(n)= (n(n+1)) ÷ 2
Explicit
200
Evaluate: y·x^2·z^3 Where y = 3, x = 4, z = 2
384
200
Is this set or coordinates a function or not ? (1,-1) (2,6) (3,15) (1,20)
Not a funtion
200
Solve a^2 + b^2 = c^2 for c
C= √(A^2)(B^2)
200
Explain what a recursive formula is..
* Indicates the first term(or first few) * Tells how the n-th term is related to the previous one.
200
Solve : 4c-(5c-1)=7
c=6
300
Simplify: x^2·y^2·x^5·y^3
x^7·y^5
300
How is f(x² − 1) read ?
"f of x² − 1"
300
Solve K=2s^2t for t.
t= K÷(2s^2)
300
describe this sequence in words: 3,14,25,36,47...
The first term is 3. Each term after the first, is found by adding 11 to the previous term.
300
evaluate : p=300(2)^n n=5
9600
400
evaluate: 8 + 4(2 + 3)² − 7
101
400
Evaluate : (−10 − 2)(4 −8)
(−12)(−4) = 48
400
Solve Q = 3a + 5ac for (a)
A= Q÷(3+5c)
400
Does the domain of a function represent the independent or dependent values of a function ?
Independent values
400
A sequence begins with 1 & 3. After that, each term is the sum of the two preceding terms. The first 6 numbers are 1,3,4,7,11,18. write the next four.
29,47,76,123
500
Let x = 10, y = 4, z = 2 Evaluate: x + yz =10 + 4· 2
18
500
If a line on a graph intercepts the y axis more than once, is it a funtion ?
NO
500
Solve, t=(33v)/(x÷33) for v:
V= t +(tx÷33)
500
What sequence does this statement describe ? the first term is 5; Every term after the first is the previous term multiplied by (7+n)
5,45,450,4950,59400
500
What is the midpoint between the following two points? (–6, 5), (7, 3)
(.5,4)
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