vertex and axis of symmetry
What is the axis of symmetry for f(x)=x2+4x−5
x=−2
What is the y-intercept of f(x)=x2−5x+6
6
Does this parabola open up or down? f(x)=−3x2+5
down
When given an x value, what do we do to find its ordered pair?
substitute the value into the equation
If you had to eat 1 thing for the rest of your life what would it be?
don't yuck someone's yum
What is the vertex of f(x)=−(x−3)2+7
(3,7)
Find the x-intercepts of f(x)=x2−4
x=−2 and x=2
If a parabola has vertex at (2,−5) and a=2, does it have x-intercepts?
yes
When looking for the x intercept, what do we set our y value to?
0
What is Mr. Laverde's favorite thing to implement in his classes
GROUP WORK!!!!!!!!
This parabola has vertex at (−1,−4) and opens downward. Write it in vertex form.
f(x)=−(x+1)2−4
Which parabola has TWO x-intercepts?
A) f(x)=(x+1)2
B) f(x)=(x−2)(x+3)
C) f(x)=x2+1
Answer: B
Order these parabolas by narrowness (narrowest to widest): f(x)=x2, g(x)=0.5x2, h(x)=3x2
h(x),f(x),g(x)
Mr. Laverde is going where on spring break
Colombia
What does it mean to be a y intercept?
to cross the y axis
The axis of symmetry is x=5. If (2,8) is on the parabola, what point on the other side is also on it?
(8,8)
Find both x-intercepts of f(x)=2x2+5x−3
x=1/2 and x=−3
This parabola has vertex (−2,3) and passes through (0,7). Find a
a=1
What are you doing for spring break?
answer better be good
what is a binomial?
an equation with 2 different terms
Find the vertex of f(x)=2x2−12x+16
(3,−2)
This parabola has x-intercepts at −4 and 6. Its y-intercept is −12. Find the equation in factored form.
f(x)=1/2(x+4)(x−6)
A parabola has x-intercepts at 1 and 5, and vertex at (3,k). Find k if a=−1.
k=4
What are Mr. Laverde's favorite movies?
horror
what is a trinomial?
an equation with 3 different terms