4.1-4.2
What is the y-intercept of the equation y=x2+8x+9?
-9
Solve the equation by factoring x2=6x.
x=0 or 6
Solve x2 - 12x = 28 using the quadratic formula.
14 or -2.
Write the equation in vertex form. y=-2x2+8x-3
y = -2(x-2)2 +5
Vertex.
What is where the axis of symmetry intersects?
What is the axis of symmetry of the equation y=x2+8x+9?
-4
Simplify square root of -18.
3i times the square root of 2.
Solve x2 +10x + 25 = 49 using the square root property.
x = 2 or -12.
Write the equation in vertex form. y=x2+6x-5
y = (x+3)2-14
Roots.
What is the solutions of a quadratic equation?
What are the zeroes of the function f(x)= x2+ 6x +8
-4 and -2
Simplify -2i x 7i.
14
Solve x2 + 22x +121 = 0 using the quadratic formula.
x= -22/2 or -11
Write the quadratic equation in vertex form, then identify the vertex, axis of symmetry, and the direction of the opening.
y=-3(x-1)2+5
y=-3(x-1)2 + 5; (1,5); x=1; opens down
Axis of symmetry equation.
What is -b/2a?
State the maximum or minimum value of the equation y= x2 - 4x + 9.
Minimum Value = 5
Simplify i45.
i
Solve x2 + 8x -20 = 0 by completing the square.
x = 2 or -10.
Do you shade inside or outside the parabola for the equation y is greater than x2 +2x + 1.
Inside.
Discriminant
What is the b2 - 4ac?
Find the roots of equation -x2 +4x -1 = 0
Between 0 and 1, and between 3 and 4.
Write the quadratic equation with the roots of .5 and -5.
2x2 + 9x - 5 = 0
Solve x2 +4x + 11 = 0 by completing the square.
x= -2 plus or minus i times the square root of 7.
Solve x2-3x is less than or equal to 18 algebraically.
[-3,6]
Quadratic Formula.
What is -b plus or muins the square root of b2-4ac over 2a?