All Things Quadratic
Functions
Solve by any method
Exponential
Random
100
What are the zeroes? y=(x+2)(x-1)
x=-2 and x=1
100
Function f is represented by f(x)= 5(x+11)
Find f(-2).
45
100
v2+2v-8=0
2 and -4
100
For the exponential function y=15(3)x, what is the factor, and does the function represent growth or decay?
3
Growth
100
Which function value is greater: A(4) or B(4)?
City B
200
y=2x2-4x+5 What does a, b, c equal?
a=2
b=-4
c=5
200
Describe the domain of the function:
The domain of this function is all positive time values from 0 to 170 seconds.
200
4(x+1)2=16
1 and -3
200
Larry invested $27,000 in a savings account that pays an annual interest rate of 2%, compounded yearly. How much is in Larry’s account after 5 years?
$29,810.18
200
A bacteria population starts at 1000 and triples every day. Create a table showing the population at:
0, 1, 2, 5 and d days
day population
0 1000
1 3000
2 9000
5 243,000
d 1000 (3)d
300
What is the y-intercept? y=x2+2
(0,2)
300
n(x)=6x3+2x2
What is n(-2)?
-40
300
x2+2x-24=0
-6 and 4
300
Does this graph represent an exponential growth or exponential decay situtation?
Exponential Growth
300
Find the missing number that makes the expression a perfect square. NEXT, write the expression in factored form.
x2 -_____+16
x2 - 8x +16
(x-4)(x-4)
400
x2-6x+8=0 Solve by factoring.
(x-4)(x-2)=0
(4,0)(2,0)
400
Describe the range of the function:
The range is all positive distances from 0 to 60 meters.
400
x2-11x+19=-5
3 and 8
400
Is the function exponential growth or decay?
Write the equation to represent the graph. 
Decay
y = 2400 (0.5)x
400
Determine the x-intercepts, vertex and y-intercept for the following equation:
y=(x-5)(x-3)
x int = (3,0) (5,0)
vertex =(4,-1)
y int = (0,15)
500
What is the vertex? y=-(x+5)2-6
(-5,-6)
500
Here are the equations that define three functions.
f(x)=4x-5 g(x)=4(x-5) h(x)=4-5x
Which function value is largest: f(100), g(100), or h(100)?
f(x)=4x-5
395
500
4x2+8x+3 = 0
-1.5 and -0.5
500
Annual sales of a fast food restaurant are $530,000 and increasing at a rate of 5% per year. What will the annual sales be in 6 years? (show the equation and answer)
530,000(1.05)6 =$710,250.69
500
What is the bee population when it is first measured?
What factor is the bee population going up by?
What is an equation that models the bee population?
1. 500
2. 2 (doubling)
3. y = 500 (2)x