Intro to Quadratics

When a quadratic function is in standard form (  $ax^2+bx+c$  ), what do you need to find the vertex?

• y-intercept

• axis of symmetry

• zeros

• x-intercept

 $5\left(x-2\right)^2+10$  

When a quadratic is in vertex form (seen above), what is the vertex?

• (-2, 10)

• (2, 10)

• (-2, -10)

• (5, 10)

When dealing with the vertex form and factored form of a quadratic, x is...

• the independent variable

• a variable

• used to find domain

• a LIAR!

 $-3x^2+12x-7$  
What is the y-intercept of the above quadratic in standard form?

• (2,0)

• (0,2)

• (-3, -7)

• (0,-7)

In a real-world problem, what key feature of a quadratic are they looking for when they ask for the "maximum height"?

• y-intercept

• vertex

• x-intercept

• starting value

Which point will ALWAYS be located on the axis of symmetry?