What is a set of x value?
Domain
write a, b, c from the quadratic
y = 3x2 + 2x -1 (Standard: y = ax2 + bx + c)
a=3, b=2, c=-1
y = a(bx - c)+ d, what alphabet tells wider or narrower? (chose one from a,b,c,d)
a
( x + c ) moving right or moving left?
moving left
What kind of function is this? y=2x -5
Linear function
What is a set of y-value?
range
How many solutions are there if b2 - 4ac = 0
one solution
y = lx - 1 l
What is the transformation?
moving 1 unit right
(x - c) moving right or moving left?
moving left
What kind of function is this? y=3x2 - 2x + 1
Quadratic function
what is a domain of the graph?
All real number or -∞ < x < ∞
What is zeros(x-intercept)?
(-1, 0) (3, 0)
y = (x + 3)2
What is the transformation?
moving left 3 units
y = lxl + 3 means moving up 3 or down 3?
up 3
What kind of function is this? y=l x +5 l
absolute value function
What is a range of this graph?
[0, ∞)
What is a vertex?
(2, -2)
y = (x - 1)3 + 5
What is the transformation? (2 transformation)
right 1, up 5
y = lxl - 2 means moving up 2 or down 2?
down 2
What kind of function is this? y = 2x3 + x2 - 3x +5
Cubic function
True or False?
Domain: -∞ < y < ∞
Range : -∞ < x < ∞
False
What is axis of symmetry?
x = 2
y = |x - 2| + 1
What is this transformation? (2 transformation)
right 2, up 1
y = lx - 2l - 3
what transformation is this? (write 2 things)
right 2, down 3
What kind of function is this? y = √x+3
square root function