Chapter 8
What is a vertex?
The point where the graph changes
SQRT 1/7 is in its simplest form.
True
Write the equation in standard form
2x-x^2=1
x^2-2x+1=0
What is the domain of the function
8 SQRT x
x >0
What is the Axis of symmetry
The line where both sides of the porabola are symmetrical
Simplify the expression
SQRT 128
8 SQRT 2
Find the value of c that completes the square
x^2 -8x+c
c=16
solve the equation
SQRT x = 9
x=81
Describe the transformation
f(x)=3x^2 + 1
Vertical stretch by 3
Up 1
Simplify the expression
-CBRT 81m
-9m SQRT m
Find the number of x-intercepts
y=x^2+5x-1
two x-intercepts
Solve the equation
7= SQRT m] -5
m=144
Compare the graph to the graph of f(x)=x^2
j(x)=.75x^2
Vertical shrink by 3/4
Simplify the expression
SQRT 125b
5 SQRT 5b
how many x-intercepts are there?
y=-6x^2+3x-4
none
Describe the transformation
h(x)= 2 SQRT -x] -6
v stretch by 2
reflect off x axis
down 6
Describe the transformation
q(x)=-9/2x^2
Reflection off the x-axis
v stretch by 9/2
4x^2=12
4x^2 -12=0
Solve the system by elimination
y=x^2-5x-7
y=-5x+9
(4,-11)
(-4,29)
Solve the equation
3 SQRT y] -18=-3
y= 25