Quadratic Linear

Review math's 9th grade

​Graphing linear and quadratic formula

​linear equation is....​

​linear equation is

y= mx + b​

​Axis of symmetry is...​

The axis of symmetry is the dividing line for a parabola.​

​​Vertex..

​Vertex is the highest or lowest point of a quadratic.​

​Parabola...​

A parabola is the shape of a quadratic equation.​

y= positive or negative a (x-h)²_+K

​vertex (-h,k)

​plug in 0 for x to find y intercept

​Axis of symmetry is x= -h

​positive "a" means vertex is a max/parabola opens down.

​negative "a" means vertex is a min/parabola opens up.

​standard form:

y= ax²+bx+c

​y intercept is (0, c)

​Axis of symmetry if x= -b/2a

​vertex is (-b/2a, plug in x to get y)

​positive "a" means vertex is max/ parabola opens down.

​negative "a" means vertex in min/ parabola opens up.

​Factored form:

​y= a (x-b) (x-c)

​Plug 0 for x to get y intercept

​Axis of symmetry is X= b+c/2a

​Vertex is ((b+c/2a) plug in x to get y)

​Positive "a" means vertex is a max/ parabola opens down.

Negative "a" means vertex is a min parabola opens up.

​X intercept are (b,0) and (c,0)

​                         HAVE FUN!