Linear Equations
Systems of Equations
FUN-ctions
Relations
Xtra
100
Jeffrey is saving money to buy a large batch of cookies for a total of $21! His mom gave him $5 and will give him an additional $2 every day for walking his dog. Write an equation that represents this scenario and decide how many he will need to walk his dog to have enough money.
21 = 5 + 2x
x = 8 days
100
Solve this system
2x + 3y = 13
4x − 3y = 5
x = 3 and y = 7/3 or (3, 7/3)
100
Which table is a function?
4 is a function
100
In slope-intercept form write the equation for:
y = 2/3x - 4
100
Name the club that won Spirit Week and two students from the club?
Cookie Monsters & names may vary
200
Mayari earns $8 per hour playing video games as a beta tester. Mayari was also paid $4, just for attending. At the end of the day, Mayari had made $100. In slope-intercept form, write the equation that represents this scenario. Include what x represents and is equal to, to be true.
100 = 8x + 4
x = 12 hours
200
Determine whether (2,3) is a solution to the system
−x + y = 1
3x + 2y = 12
Yes, (2,3) is a solution!
200
Which graph is a function? 
(1) is a function since it passes the vertical line test 
200
What is the relation?
The relation of the table is
{(0,1), (1,2), (2,4), (3,16)}
200
Name one of the sports that Sami and Rohaan played during Community Day on Week 1 of BTSB?
Volleyball, Soccer
300
Nicco is paying for swim lessons. The cost for the first lesson is $10, and he pays $7 per hour of swim time. In slope-intercept form, write an equation that represents this scenario.
y = 7x + 10
300
Solve by graphing
y = -2x + 3
y = -2x - 2
No Solution!
300
Which mapping diagram is not a function?
B is not a function because the C input has two outputs.
300
Write the Domain and Range for the following mapping diagram:
Domain: { -4, -3, -2, 0, 4, 5 }
Range { 0, 2, 5, 6, 11 }
300
What does Sami's class always have on her whiteboard at the start of class?
Question of the Day!
400
Solve for x:
2(x−3) + 4 = 3x−5
x = 3
400
Solve this system
2x+3y=8
6y+4x=16
Infinitely Many Solutions 
400
Is the inverse of this relation a function?
{(6,0), (7,1), (6,2), (5,3), (3,5)}
Yes, the inverse relation:
{(0,6), (1,7), (2,6), (3,5), (5,3)}
has one value of y for every x value so it is indeed a function!
400
Create a table and mapping diagram for the following relation: { (4,20), (5,30), (6,42), (7,56) }
Yes!
400
What was Sami's Question of the Day on Monday?
If somebody told you a lie and you thought it was the truth, then you told someone else, are you telling the truth or a lie?
500
Jolie bought a new computer and printer. The computer costs twice as much as the printer. Jolie also had to pay a fixed sales tax of $30 for the entire purchase. In total, Jolie spent $930. How much did the computer and the printer cost?
The printer costs $300.
The computer costs $600.
500
Solve this system
2y + x = 4
3x+ 4y = 10
x = 2 and y = 1 or (2,1)
500
Which is a function?
The mapping diagram represents a FUNction!
500
Which equation represents the graph?
(D) y = 3x - 1
500
What schools do Sami and Rohaan go to?
University of California, Berkley (Cal)
and
Tufts University