Solve the Equation
3x + x = -8
x = -2
If (2,1) , (3,4) , (2,3), (6,7) is a relation. Is this relation a function? Explain your answer
It is not a function since the same x values of 2 do not have the same y value
Find the slope of the line: y = -5x +5
What are all of the methods of solving systems of equations that we covered?
Subtracting, Adding, Multiplying, and Substitution
(x-6)(5x+6)
5x^2 - 24x - 36
15 = -3x - 5 - 2x
x = -4
Determine the domain of the following relation: (-5, 4), (-5,1), (2, 3), (-4, 0), (6, 4)
Domain = -5 < or equal to x which is < or equal to 6
Find the slope: (7, -10), (14, -17)
Slope or m = -1
Solve the system of the equation:
-6x + 9y = -6
6x - 6y = -12
x = 3
y = -1
Simplify the expression:
(2+7x-x^2) - (7x-4+7x^2)
-8x^2 + 6
6/10 = x/4
Determine the independent and dependent variables:
The amount of leaves depends on how big a tree is.
I: Size of tree
D: Amount of leaves
Determine the common difference for each sequence: 4, 9, 14, 19
Common difference is 5
Solve the absolute value function
|x-2| -3 = 7
x = 12 or -8
Determine the degree and leading coefficient
xy^2 + x^2y^4 + x^3y
6th degree
LC =1
-2(2+x) -6 = 2(1+5x)
x = -1
f(x) = x^2 + 5x -2
Solve f(5)
x = 48
Find the first 5 terms of the following sequence and determine if it's arithmetic or not
f(x) = 55 - x^2
f(1) = 54
f(2) = 51 Not arithmetic
f(3) = 46
f(4) = 39
f(5) = 30
Graph the following absolute value function:
|x-4| -4
Factor the expression completely:
3x^2 - 27x +54
x = 6,3
Convert 500 Japanese Yen into US Dollars. Round to the nearest tenth
Use 1 US Dollar = 142.92 Japanese Yen
About $3.50
Find the domain and range of the following relation:
(-7,-1),(-7,-5), (-5,0), (6,0), (2,0), (2,-6,) (3,0), (5,2)
D: -7 < or equal to x < or equal to 5
R: -6 < or equal to y < or equal to 6
Determine the x and y intercepts of the following equation: -5x + 10y = 100
x-int = -20
y-int = 10
Solve the system of equations:
x+ 4y = 23
8x - 2y = -20
y = 6
x = -1
Factor the expression completely:
24x^3 - 9x^2 + 40x - 15
(3x^2+5)(8x-3)