Identify the property shown:
6x(1/6x) = 1
Inverse Property
Simplify the expression:
n + 4 - 10n + 18
-9n + 22
Is this a function? Why?
{(-6,4), (5,-1), (0,3)}
Yes, because the domains do not repeat.
What is the slope of the line whose equation is 2y = 3x + 4
m = 3/2
2/9 = 4/x+8
x = 5
Which of the following statements is true?
a.) All integers are whole numbers
b.) All irrational numbers are real numbers
c.) All real numbers are integers
d.) All rational numbers are natural numbers
Solve the one-step equation
2x = 12
x = 6
Is this a function?
R={(−2,5),(0,3),(4,3),(4,−1)}
Why or why not?
No, because there are repeated domains (ex: 4)
Describe the difference in slopes in parallel lines and perpendicular lines.
Parallel: They have the exact same slope
(line 1: m = 2; line 2: m = 2)
Perpendicular: They have negative reciprocal slopes
(line 1: m = 2; line 2: m = -1/2)
Find the zero(s) of the function algebraically.
f(x) = -4x2-x+4
x = 4, 1, -1
Identify the property shown:
12(x+4) = 12x + 48
Distributive Property
Solve the two step equation:
9 - (3/4)x = 57
x = -64
Find the function values using the given functions below.
f(x) = 5x - 20
f(6)
f(6) = 10
Write an equation that is parallel to y = -4x + 5 and passes through the point (-2,-1)
y = -4x - 9
4/x+4 = 12/8
x = -4/3
Which expression represents an irrational number?
a.) 0.181818
b.) 2/3
c.) .4569230421
d.) 0
c.) .4569230421
{-7, 5}
Name the domains of the function
{(2,3), (3, 7), (1, 8), (6, 10)}
Domains: {2, 3, 1, 6}
y = x - 6
Find the zero(s) of the function algebraically
f(x) = 8x - 16
Are integers always/sometimes/never whole numbers?
sometimes
Solve the following Literal Equation for y:
Ax+By = C
y = C - Ax / B
Find the function values using the given functions below:
f(x) = 5x - 20 g(x)= x2+5x-11
Find f(-1) + g(-2)
f(-1) + g(-2) = -42
Solve the system of equations by substitution or elimination
x + 2y = 3
5x + 3y = 8
Substitution: Elimination:
x = -2y + 3 5(x+2y=3)
5x + 10y = 15
5(-2y+3) + 3y = 8 (-)5x + 3y = 8
y = 1 y = 1
Solve the proportion
6/2n-5 = 2/n-7
n = -16