Is this a function?
Which of the following is NOT a function?
{(7,1), (-1,7), (6, -2), (4,1)}
{(8, -5), (0,1), (-1,2), (5,4)}
{(-2,-8), (-8,8), (-6,5), (5,-8)}
{(-1,6), (8,-5), (-1,-8), (3,5)}
{(-1,6), (8,-5), (-1,-8), (3,5)}
Given h(x)=4x+2, find h (5).
4(5)+2= 22
What is the definition of a turning point?
When the point changes direction, inc to dec or dec to inc. These are max and mins
What does AROC stand for?
What is another name for it?
Average Rate of Change
Slope
Evaluate: 5x-2 at x= -20
5(-20)-2= -102
What test does a graph need to pass in order to be a function?
Vertical Line Test
Given g(x)=−5x+2, find g(−4)
-5(-4)+2= 22
What is 0 in a coordinate when we are looking at a y-intercept?
X
What is the formula for AROC?
y2-y1
---------
x2-x1
Simplify the following:
square root of 49
7
Which of the following is a function?
{(1,3),(−7,−1),(8,−8),(1,−9)}
{(−1,−1),(−9,−1),(−8,0),(−4,−4)}
{(6,−5),(−5,3),(−5,−8),(−2,7)}
{(−3,5),(−3,−3),(7,−7),(0,5)}
{(−1,−1),(−9,−1),(−8,0),(−4,−4)}
What is another word for x-intercept?
Zeros
Roots
Answers
Solutions
What is the average rate of change over the interval
3<x<6 for the function 2x+3
2
When you factor, what is the first step ALWAYS
GCF
How do we explain if something is a function?
Every y, has a unique x.
The x-values do not repeat.
When a graph is positive, where is it located on the graph?
Above the x-axis
What is the number we want to always compare our AROC to?
Hint: Is associated with the word "per"
1
Solve the following:
5x+2=3x+40
x=19
Evaluate the AROC: at x=3 to x=9 for f(x)=x^2
81-9 72 12
----- = ------ = ------
9-3 6 1
Factor Completely:
2x^2-50
2(x^2-25)
2(x+5)(x-5)