8.9 - The Discriminant - HW Check

What is the discriminant of the following parabola?

What is the vertex of the following parabola? Write as an ordered pair.

(a)  

What is the range of the parabola?

Use the "axis of symmetry" formula to find the vertex. $$y=-2x^2+8x-10$$  

(a)  

What was the discriminant for #2?

(a)  

How many solutions, or x-intercepts does #2 have?

What was the discriminant for #4?

(a)  

How many solutions, or x-intercepts, does #4 have?

What is the discriminant of the following quadratic function?

$$y=3x^2-5x+10$$  

(a)  

Use the discriminant to find the number of solutions of the following quadratic function.

$$y=x^2-5x+2$$