-4x=24
A=20
B=-20
C=6
D=-6
D=-6
X-(-4,-3,-2,-1,0,1,2)
Y-(7,6,5,4,3,2,1)
Domain: {-4, -3, -2, -1, 0, 1, 2}
Range{1,2,3,4,5,6, 7}
Solve by elimination:
4x+9y=28
-4x-y=-28
A (-7,0)
B (6,0)
C (-6,0)
D (7,0)
D (7,0)
5x9.-6x2
(.) Multiplication^
A -30x11
B -30x18
C -x11
D -x18
A -30x11
y=a(b)x In an exponential function, what does the 'a' represent?
Y-Intercept
A 2
B 5
C -1
D 1
D 1
For the function {(0,1),(1,-3),(2,4),(4,1)}, write the domain and range.
D: {1,-3,4}
R:{0,1,2,-4}
D:{0,1,2,-4}
R:{1,-3,-4}
D:{0,1,2,3,4}
R:{1,-3,-4}
Correct Answer:
D:{0,1,2,-4}
R:{1,-3,-4}
Solve by elimination:
3x+7y=23
-3x-7y=-17
No solution
(-15x2yz4)0
A -15x2yz4
B 1
B 1
What is a, the starting term, for the function: f(x) = 300(1.16)x?
300
Solve:
2(2x + 3) = -6(x + 9)
A 1.2
B 6
C -6
D 7.5
C -6
Which set of coordinates describe a function?
A {(2,4),(-2,7),(6,2),(-2,8)
B {(7,2),(3,9),(3,10),(-1,7)}
C {(7,-4),(3,-3,),(2,-2),(7,-8)
D {(6,3),(-6,4),(4,0),(1,2)}
D {(6,3),(-6,4),(4,0),(1,2)}
Solve by elimination:
-9x-4y=-20
5x+4y=4
C (4,-4)
15y2 . (2y)3
A 120y5
Which of the following functions shows an initial amount of $15 and an increase of 35% each year?
y=15(1.35)x
Solve:
4x + 5x = 27
A 27
B 3
C -27
D 0
B 3
X Y What is the range shown in this table?
1 -7
2 -5
3 3
4 7
5 2
(-2,3,7)
Solve by elimination:
4x+4y=4
3x+4y=10
B (-6,7)
Simplify
y10/y-5
y15
Suppose a culture of bacteria begins with 5000 cells and dies by 30% each year. Write an equation that represents this situation.
Solve
x/6 = 5
A 30
B 5/6
C 36
D 9
A 30
Identify the range of the following relation:
x -6 0 2 4
y 14 32 38 44
Solve by elimination:
-x+2y=17
2x+2y=-10
B (-9,4)
Rewrite using a positive exponent.
2w-13
2/w13
20x7/10x5
2x2
A 8
B 2
C .5
D -8
A 8
What is the range of this relation?
(–8,–3)
(–3,–8)
(–1,6)
(4,2)
A{-3,2,6,8} C{-8,-3,2,6}
B{-8,-3,-1,4} D{-3,2,6}
C{-8,-3,2,6}
Solve by elimination
4x-6y= -6
-2x-12y= -12
A (0,1)
B (1,0)
C (1,1)
D (2,1)
A (0,1)
-6x6y12
15x7
Solve:
-7/8 = m - 3/8.
A -5/4
B 1/2
C -1/2
D 5/4
C -1/2
What is the domain of this relation?
(–4,4)
(8,–1)
(9,–9)
(1,2)
(1,8)
A {-4,1,8,9} C {-4,1,2,8,9}
B {-9,-4,1,8} D {-9,-1,2,4,8}
A {-4,1,8,9}
Solve by elimination
2x+9y= -7
6x-3y= 9
A (-1, -1)
B (2,-1)
C (1,1)
D (1,-1)
D (1,-1)
1/s7
(2x2y4)3
8x6y12
Solve:
2(2t - 3) = 6(t + 2)
t=-9
What is the range of this relation?
(8,9)
(2,6)
(7,–7)
(7,–8)
A {-8,-7,2,6,9} C {-8,-7,0,6,9}
B {-9,2,7,8} D {-9,0,6,7,9}
C {-8,-7,0,6,9}
A (2,0)
B no solution
C (0,-2)
D infinite solutions
8x2
Which is an exponential function?
A y = mx + b
B y - y1 = m(x - x1)
C y = abx
C y=abx
Find the Error
What error did the student make when solving the equation:
1/5x + 6 = 3/5x + 5
1x + 6 = 3x + 5
-2x + 6 = 5
-2x = -1
x = 1/2
B The student did not multiply all terms by the common denominator
What is the range of this relation?
(–5,8)
(–6,2)
(2,5)
(–2,8)
(2,–6)
A{-6,2,5,8} C{-6,-2,2,5)
B{-6-5,5,8} D{-6,-5,-2,2}
A{-6,2,5,8}
Solve by elimination
-12x-10y= 0
6x+5y= -1
A infinite solutions
B (0,0)
C no solution
D (2,1)
C No solution
Simplify: (s2r-4)(s6r-2)
Write an equation that models the following situation:
Samantha's hair was known to grow very rapidly. It began at a length of 6 in and grew at a rate of 14% a week.
y=6(1.14)x