Which equation is represented by the graph? (see graphing worksheet, #a)
y=x-2
100
Proportional graphs cross through the ____________.
Origin
100
True/False- The graph represent y as a function of x (see #c)
False, this is an undefined slope and it does not pass the vertical line test.
100
David is three years younger than twice his sister's age.
Write an equation to model David's age, y, if his sister's age is represented by x.
y=2x-3
100
The distance from Earth to Mars is 54 thousanths of a light year. What is this distance in Scientific Notation?
5.4 x10^-2
200
What is the solution to this system of equations?
y= 3x-2
y=-x+1
Use graphing calculator
(.75, .25)
200
Function or not?
{(3,0), (3,2), (3,4), (5,6)}
Explain why.
Not. There is an x that is repeated. (3)
200
True/False- The graph represents y as a function of x (see #d)
True, this zero slope. It passes the vertical line test.
200
Austin paddle boards charges a flat fee of $20 to rent a paddle board for the day plus an additional $5 per hour. Write an equation to model the total cost.
y=5x+20
200
The solution of a system is where the two lines ________.
What is the solution to y=3x -2 and y=-2x+8?
Intersect, (2, 4)
300
Use table F and the stat (linear regression) feature on your calculator to come up with an equation for the table of values.
y = 3x -3
300
In non-proportional relationships the rate of change is __________ for every (x, y) pair. To calculate the rate of change you divide the ____ by the _____.
Different, y, x.
300
What is the slope of the linear function shown in the graph? (see #e)
-1/2
300
Marc's Xbox live balance is modeled by table J, where y represents the remaining balance for any number of months used, x. Write an equation to model the situation.
y = -2.50x +25
300
Jay Z's "Magna Carta Holy Grail" was downloaded 32,000 times in 4 days. At this rate how many downloads can he expect in 7 days?
56,000. Beyonce is very proud.
400
Using the graphing calculator, graph the equation y=4x-8.
True/False- The table of values represents the ordered pairs of the graphed equation (see #b)
False- (6, 14) is incorrect. It is (6,16)
400
Is table I a proportional relationship? If so, what is the rate of change?
Yes, k= 5.
400
The graph below shows the relationship between the number of minutes Sandy ran and the number of calories burned. (see #g).
T/F The slope of the graph represents the number of calories burned per minute of running
True
400
Best Buy let's you buy an Iphone for $50 and charges you a $20 dollar fee per month. Wal-mart offers the Iphone for an initial price of $40 and a per month fee of $25.
The equation is modeled below:
50 + 20x = 40 + 25x
For what value of x will the prices be the same?
a. 5
b. 10
c. 3
d. 2
d. 2
400
Alex created a rating system to rank his friends FIFA skills. His friends scored the following: 3/8, 1/4, -2, 40%, -9/5.
Rank these scores from least to greatest.
-2, -9/5, 1/4, 3/8, 40%
500
y=3x-4
y=-1/2x+3
a) Identify both slopes
b) Identify both y-intercepts
c) Find the solution
a) slopes: 3; -1/2
b) y-int: -4; 3
c) (2,2)
500
Draw an example of a graph that is not a function. Why is it not a function?
It is not a function because . . .
500
Identify the slope, y-intercept, and the equation from the table below. (see #h)
Slope: -2
Y-int: 1
Equation: y=-2x+1
500
Create a real world scenario which can be modeled with the given equation: y=3x + 14
Scenario:
500
2, -12, 3/5, pi
Match each number with one of the following: REAL, RATIONAL, INTEGERS, WHOLE NUMBERS
REAL- pi
RATIONAL- 3/5
INTEGERS- -12
WHOLE NUMBERS- 2