Who Wants to Be A $1x106aire
Describe |3x-1|?
Linear, inc,
Abs Value, min
Linear dec
Abs value, max
Describe y=5(2)-x ?
Exponential growth
Quadratic
Exponential decay
polynomial
Domain and range for y= -4x2 + 7
D(-∞, ∞) R(-∞ , 7]
D(-∞, ∞) R[7,∞)
D(-∞, 7] R(-∞ , ∞)
D[7,∞) R(-∞ , ∞)
Evaluate f(x) = - 4x2 - 2x +9 for f(-3)
21
51
39
-21
Dashed line shade left
Dashed line shade right
Dashed line shade above
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Solve |3x+8|+1=21?
x=28/3,-28/3
x=-4, 28/3
x=-28/3, 4
No solution
4x-6y=6 in slope intercept form is:
2
𝑦 =− 𝑥 −1
3
𝑦=
3
𝑥+1
2
2
𝑦 = 𝑥 −1
3
3
𝑦=− 𝑥−1
2
Solve 6x + 6y = -10 and 2x + 2y = -5
Infintely many solutions
No solution
(3/2,3/2)
(-3/2, -3/2)
The y-intercept of y= 3 (5)x?
3
5
1
0
Solve f(x)=3x2-2x-6 for x.
x=2,3
(1 ± 19)/3
x=2/3,-3
(2 ± −68)/6
The equation that models invest $50 at
an interest rate of 5% per year.
P=50(1+0.5)t
P=0.5(1+50)t
P=50(1+0.05)t
P=50+0.05t
The vertex and axis of symmetry for
f(x)=4x2+16x?
(-32,-2) x=-32
(0,4) x=0
(-2,-32) x=-2
(4,16) x=4
Axis of symmetry is x=0. (4,27) lies on
the parabola, what other point lies on it?
(4,-27)
(0,27)
(-4,27)
(-27,0)
Factor f(x)=10x2+7x-12
(2x+3)(5x-4)
(10x+6)(x-2)
(2x-4)(5x-3)
Can’t be factored
The quadratic function with zeros of 1,5
and vertex (3,-4) is:
f(x)=x2 – 6x + 5
f(x)=x2 + 6x + 5
f(x)=x2 + 3x - 4
f(x)=x2 – 3x + 4