Point-slope form of a linear equation
y-y1 = m(x-x1)
What is the axis of symmetry for the following graph?
x = 2
Does the function below have a min or a max?
f(x) = x2 - 3x + 12
min
If you know the vertex of a parabola, you also know the what?
axis of symmetry and min or max
Is the following a quadratic function? Explain why.
f(x) = x3 + x2 -8x
No, because there is x3
How many alumni currently work at TCS?
Three
Axis of symmetry formula
x = -b/(2a)
What is the axis of symmetry for the following graph?
x = 5
Does the function below have a min or a max? And, what is the y-intercept?
f(x) = -7x2 - 3x + 12
max, y-int is 12.
What is the vertex for the following graph?
(1, 2)
Define Quadratic formula
How long has Mr. A worked at TCS?
21 years
Exponential function
y = ab^x
What is the axis of symmetry for f(x) = x2 + 2x + 1
x = -1
What is the minimum for a quadratic function whose vertex is (-4, 13)?
min: 13
If the vertex of a quadratic function is (-3, -1) as its minimum point, what are domain and range of that function?
Domain: All real numbers
Range: y> -1
What is the solution using the quadratic formula
x^2 - 8 = 2x
x = 4 or x = -2
How long has Coach Wachsmann been married?
11 years in June
Discriminant function
b^2-4ac
What is the axis of symmetry for f(x) = x2 - 8x + 20
x = 4
What is the min/max for the following graph?
max= 2
What is the vertex for the following quadratic function?
y= (x-3)2 +2
(3, 2)
What are the solutions to the equation? Using complete the square method.
x^2 -14x +16 = 0
x approx 12.74 or x approx1.26
How many high school students are currently enrolled?
39
Vertex form of a quadratic function
f(x) = a(x-h)^2 + k
What is the axis of symmetry for f(x) = 2x2 - 12x + 1
x = 3
What is the y-intercept of the following graph?
(0, 8)
What is the vertex for the function f(x) = x2 + 2x -3
(-1, -4)
How many numbers of solutions?
2x^2-3x = -5
no real solutions
How many monitors are being used in the main computer lab? (Mr. A)
Six.