Quadratic II

If given a picture of a graph, how can you find the "solutions" to a quadratic function?

• Ask your friend

• Solutions are where the quadratic crosses the x-axis.

• Plug into a calculator

• Magic 8 ball

X-intercepts are also known as

• Parabola

• Zeros

• Solutions

• Roots

• Vertex

Tags

CCSS.HSF-IF.C.7A

• Missing ± after - (b)

• The denominator should be 2a

• There are no errors. It is correct

Tags

CCSS.HSA-REI.B.4B

What do we call the highest or lowest point of quadratic?

• Parobola

• Vertex

• Graph

• Point

• This is the speed of light formula

• This is the quadratic formula

• This is the zero-product property

• This is the axis of symmetry formula

Tags

CCSS.HSA-REI.B.4B

What is Vertex Form of quadratic function?

• f(x) = ax² +bx + c

• g(x) = a (x - h)² + k

• (h , k)

Which of this is Factor Form of quadratic function?

• f(x) = ax² + bx + c

• h(x) = a (x - h)² + k

• g(x) = (x - r₁) (x - r₂)

• ( h , k)

What are the real roots (solutions) of the quadratic

y = 2x² + 4x + 5

• ( -1 , 3 )

• ( 0 , 5 )

• ( 5 , 0 )

• No Real Solution

How would we find the variable "a" that goes with the parabola?

y = a (x - 1)² + 2

• You plug the random numbers and guess and check

• The "a" is negative

• You would use the other point on the graph and substitute for x and y

• You need to find the axis of symmetry

Tags

CCSS.HSF-IF.C.7A

The discriminant D = b² - 4ac tells the types of solutions the quadratic equation has.

Which the following discriminant give you exactly 1 solution?

• b² - 4ac >1

• b² - 4ac <1

• b² - 4ac = 0

• b² - 4ac < 0

Tags

CCSS.HSA-REI.B.4B