EXPRESSIONS, EQUATIONS & FUNCTIONS
What is this equation called?
y=ax2+bx+c
Quadratic (standard form)
What is the linear function equation?
y=mx+b
What happens twice in a week but once in a year?
The letter “e”
What is 23?
8
Define the slope of a linear equation.
rate of change, m=rise/run
What is the vertex of y=15(x- 6)2-13
(6, -13)
What is the y-intercept?
y=-2x-4
-4
What has to be broken before you can use it?
An egg
Solve (-7)2-9
40
Make a linear equation with the slope of 5.
y=5x+b
b= any real number
What key feature can you see from a quadratic in intercept/factored form?
The x-intercepts (roots)
What is the slope?
y=-2x+4
m = -2
What does every odd number have in common?
The letter “e”
What is f(2) for
F(x)=3x+4 ?
10
Use the Box Method to convert to standard form.
y=(x+2)(3x-4)
3x2-2x-8
Which function has the steepest rate of change: linear, quadratic, or exponential?
Exponential
Graph y=4(x-2)2-7.
What does this graph tell us?
The vertex. (2,-7), MINIMUM
How many months have 28 days?
12
f(x) = -x2+6
What is f(3)?
-3
Use the Box Method to factor.
y=x2+8x+12
(x+6)(x+2)
Find 3 coordinates for the graph of the exponential function, y=2x
(-2, ¼)
(-1, ½)
(0, 1)
(1, 2)
(2, 4)
(3, 8)
(4, 16)
etc.
Graph y=-2(x+4)(x-3). What does this graph tell us?
The roots:
(-4,0) and (3,0)
Where is the only place today comes before yesterday?
The dictionary
y=x2+4x-5
What are the zeros?
x=-5
x=1
What is the slope of the line through (3,-2) and (7,8)?
2.5