Linear Functions
In the equation y = 2x+5, the 5 is the...
What is y-intercept
How many real solutions does the equation
x^2 - 2x + 5 = 0
What is there are no real solutions
If x = 3 and y = 2 •3^x, solve for y
What is 54
What is the smallest integer that satisfies the equation -6x < -18?
(1) 3
(2) 4
(3) 5
(4) 6
What is (2) 4
Floyd is an aspiring music artist. He has a record contract that pays him a base rate of $200 a month and an additional $12 for each album that he sells. Write a function for the amount of money he makes based on a albums
Solve for 'a' in the equation
h = a • b + r
What is a = (h-r)/b
Given the equation 0=16x^2+2x-13, what method could you use to solve it?
What is the quadratic formula
Describe the end behavior of y=2^x
As x approaches negative infinity, y approaches zero.
As x approaches infinity, y approaches infinity.
Write the expression in its simplest form - | -7 + 4 |
What is -3
Amelia buys an empty sticker album and some sticker sheets. The equation that relates the total cost for the empty sticker album and 'N' sticker sheets is P= 0.75N + 300. What does the number 0.75 in the equation represent?
(1) The cost of the empty sticker album
(2) The cost of each sticker sheet
(3) The cost of all N sticker sheets
(4) The total cost of the empty sticker album and all 'N' sticker sheets
What is (2) The cost of each sticker sheet
Given these three lines
a) y=2x+4
b) y=3x+4
c) y=2x+2
Which pair will never intersect and why?
What are a and c. They have the same slope so the lines are parallel
Factor the quadratic y = x^2 - 6x + 8
What is (x-2)(x-4)
f(x) = 4(2^x)
What is the minimum point of the equation
f(x) = | x + 9|
What is the vertex point which is (-9,0)
After Allie takes some medicine, each hour the number of milligrams of medicine (M) remaining in her body after t minutes can be modeled with the equation M=200(1-0.27)^t. Which number represents the decay rate?
(1) 0.27
(2) 200
(3) 0.73
(4) 146
What is (1) 0.27
Zohnie calculated f(2) = 3 for the function f(x)=3x-7. Is she right? Explain your answer.
Zohnie is incorrect. f(2) = 3(2)-7 = -1
Solve the quadratic y = x^2 - 6x + 8
x=2 and 4
In what interval is the graph of y = 1.5^x increasing?
(1) Always
(2) When x >or equal to 0
(3) Never
(4) When x < or equal to 0
What is (1) Always
How does the graph of f(x) = | x - 5 |+ 2 shift from the parent function f(x) = |x|?
What is it shifted to the right 5 and up 2
The height of a projectile thrown in the air can be modeled with the equation h= -16t^2 + 48t + 160, where t is the number of seconds. At 1.5 seconds, how high will the projectile reach?
What is 196 ft.
All of these ordered pairs are part of the shaded region for the inequality y < -2x+12 except
(1) (2,7)
(2) (3,4)
(3) (5,3)
(4) (5,0)
What is (3) (5,3)
X= -4 is the x-coordinate of the vertex for the parabola defined by which equation?
(1) y= x^2+8x+3
(2) y= x^2-8x+3
(3) y= x^2+4x+3
(4) y= x^2-4x+3
What is (1) y= x^2+8x+3
The population (P) of a town after tyeas can be modeled with the equation P= 20,000(1.07)^t. What does the 20,000 represent?
(1) The growth rate
(2) The percent increase each year
(3) The population after 't' years
(4) The starting population of the town
What is (4) The starting population of the town
What happens to f(x) = alxl when a
is a negative number greater than 1
f(x) is vertically stretched (gets narrower) and is reflected (flipped)
There are 900 birds in a forest. Each year the bird population increases by 12%. Which equation relates the bird population (P) to the number of years that have passed?
(1) P=900(1.12)^t
(2) P=900(0.12)^t
(3) P=900(0.88)^t
(4) t=900(1.12)^P
What is (1) P=900(1.12)^t