Quadratic Equations
Solve the following equation:
x2 + 5x + 4 = 0
x = -4 and x = -1
What does the letter m stand for in y = mx + b
Slope
What does the "a" stand for in the exponential equation :
y = a(b)x
y intercept
The y value is the input or output of a function.
Output
How many weeks are there in one year?
52 Weeks
Would the following quadratic equation have a minimum or a maximum?
x2 -12x - 5
Minimum
Given the following equation what is the slope and y - intercept:
y = -2x + 7
slope = -2
y - intercept = 7
What is the starting value given the following:
y = 3(4)x
3
f(x) = 5x+3
Find f(1)
f(1) = 8
George Washington
What is the vertex given the following?
x2 + 6x - 8
(-3, -17)
Given the line y = 5, what is the slope?
Zero
If r is 8% and the function is exponential growth, what would the value for "b" be?
b = 1.08
What makes the following NOT a function.
(1, 0), (1, 2), (1, -3), (1, 7)
Repeating x-values
What is Ms. Kidders favorite color?
Solve the following by completing the square:
x2 -8x - 9 = 0
x = 9 and x = -1
Given the following write the equation of the line:
Use the formula y - y1 = m(x - x1)
(1, 3) and (2, 4)
y = x + 2
Given the following what is the decay rate?
y = 10,000(.88)t
12%
Given these points: (3, 4), (5, 6), (7, 8); what is the output when the input is 5
6
What is Ms. Kidders favorite singer?
Justin Bieber
Solve the following (hint: factor!!)
27x2 - 12 = 0
x = 2/3
x = -2/3
Given the following pattern (arithmetic sequence) write a formula:
1, 3, 5, 7, ...
an = 1 + 2(d-1)
Given the following pattern (geometric sequence) write a formula:
3, 6, 12, 24, ...
an = 3(2)n-1
What is the test called where you draw a line through your graph to see whether its a function or not.
Vertical Line Test
Which country consumes the most mac and cheese a year over any other country in the world?
Canada