The vertex AND the direction of this parabola: y+1=-2(x+18)^2
What is (-18,-1) and upwards?
300
(2x+3)(3x+1)
What is 6x^2+11x+3?
300
The x-intercepts of this equation: 2x^2+20x-400?
What are x=-20 and x=10?
300
3x^2+6x=-6x-12 Hint: This equation is NOT in standard form!
What is (-2, -24)?
300
This expression simplified: (on the board)
What is 3(x+1)?
400
The value of "a" of a parabola that goes through (0,0) with vertex (2,8)
What is -2?
400
The simplified form of (3x+6)(3x-6)?
What is 9x^2-36?
400
The x-intercepts of this equation: x^2-5x-10=4?
What are x=-2 and x=7?
400
Is (3,4) the vertex of this equation: x^2-6x+5=0
What is NO? The vertex is (3, -4)
400
Simplify the expression (on the board).
What is y/3z^8?
500
The equation of a parabola in vertex form that goes through the point (0,3) and has a vertex of (4,-29).
What is y+29=2(x-4)^2?
500
The simplified form of (7x+7)(2x+2)?
What is 14x^2+28x+14?
500
3x^2+24x=-21
What are x=-1 and x=-7?
500
Sally was finding the vertex of this equation:
4x^2-16x+4=0
and she got the x-value of the vertex is -2. State the most obvious mistake Sally could have made to get this incorrect answer.
What is Sally forgot to take the opposite value of b?