C=2πr
Area of a circle
A=πr²
vertex form
y=a(x-h)^2+k
standard form
y=ax^2+bx+c
factored form
y=a(x-b)(x-c)
what does vertex form display?
vertex coordinates/max. or min. value
what does standard form display?
y-intercept (c)
what does factored form display?
x-intercepts (b,c)
exponential function
y=ab^x
what does a represent in y=ab^x?
initial value/y-intercept (0, a)
how do you find the vertex in vertex form y=a(x-h)^2+k?
(h,k)
how do you tell if y=ab^x shows exponential growth or decay?
if b>1, it's exp. growth if 0<b<1, it's exp. decay
nail plate