Graphing Quadratics
The formula to find the axis of symmetry.
x=−2ab
If the discriminant is negative, there are no real solutions.
true
A wizard tells you that their magic spell follows the formula y=ax2+bx+cy=ax2+bx+c. What kind of spell could they be casting?
a spell to make things fly in an arc or grow exponentially
The number of x-intercepts a quadratic function can have.
0,1,2
The equation y=−3x2+4x−1y= opens upward.
false
A catapult launches a rock with the equation h=−5t2+20t+2h=−5t2+20t+2. When does the rock reach its highest point?
2 seconds (Using t=−b2at=−2ab)
The vertex of y=x2−6x+8y
(3, -1)
The quadratic formula is derived from completing the square.
true
I am a number. If you subtract me from myself, you get my square. What number am I?
0