Quadratic Functions
What is the quadratic formula?
x=-b+-sqrtb^2-4ac/ 2a
What is the line a quadratic formula makes called?
a parabola
y=mx+b
Graph x=2, what is the y-intercept?
there is no y-intercept
What is the exponential function formula?
f(x)=ab^x
(-2.5,-2.25)
What is the vertex of x^2+5x-6?
What is (-2.5,-12.25)
What does the letters m and b stand for?
m=slope
b=y intercept
Graph x^2-2x, does it have a minimum or maximum?
minimum
How do you tell if a exponential function is decay?
If a is positive and b less than 1 but greater than 0.
What is the zeros of x^2+5x+4?
(-4,0)(-1,0)
What are the zeros of x^2+5x-6?
(-6,0) and (1,0)
What is the y intercept and slope of of y=2x+8
b=8 and m=2
Graph 2x-6=2y, what is the y-intercept?
(0,-3)
How do you tell if a exponential function is growth?
If a is positive and b is greater than 1
Does x^2+5x+4 have a minimum or maximum?
minimum
What are the zeros of x^2-5x+6?
(3,0) and (2,0)
y=10x+2
y=10x+2
Graph 10y=100x+1000, What is the y-intercept?
Is f(x)=2^x growth or decay?
growth
What is the line of symmetry for x^2+5x+4?
x=-2.5
What are other names for the zeros of a parabola?
x-intercepts or roots
Put 2y=10-6x into y=mx+b form
y=-3x+5
Graph both 10y=100x+1000 and 2x-6+2y, at what point (round if needed) do they intersect?
(-11.444,-14.444)
Is f(x)=-2^x
decay