Jahir earns $8 per hour playing video games as a game tester. If he earned $64, how many hours did Jahir spend playing video games?
Jahir spent 8 hours playing video games.
Determine whether (2,3) is a solution to the system
−x + y = 1
3x + 2y = 12
Yes, (2,3) is a solution!
Which graph is a function?
(1) is a function since it passes the vertical line test
What is the relation?
The relation of the table is
{(0,1), (1,2), (2,4), (3,16)}
Use the power rule AND the product rule to simplify the following:
33 • (36)2
315
Dayana is renting ice skates and paying for ice rink time. The rental cost for the ice skates is $10, and she pays $7 per hour for the rink time. If she spends a total of $38, how many hours did Dayana spend ice skating?
Dayana spent 4 hours ice skating.
Solve by graphing
y = -2x + 3
y = -2x - 2
No Solution!
Which mapping diagram is not a function?
B is not a function because the C input has two outputs.
Write the Domain and Range for the following mapping diagram:
Domain: { -4, -3, -2, 0, 4, 5 }
Range { 0, 2, 5, 6, 11 }
Simplify the following:
y17 • y38 • y45
y100
Solve for x:
2(x−3) + 4 = 3x−5
x = 3
Solve this system
2x+3y=8
6y+4x=16
Infinitely Many Solutions
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!
What is the relation and inverse of relation for the following:
Relation:
{ (4,20), (5,30), (6,42), (7,56) }
Inverse of Relation:
{ (20,4), (30,5), (42,6), (56,7) }
Use the power rule or the multiplication rule to simplify the following:
-6x • 9x2
-54x3
Lucas and Taran both play basketball. With no free throws, Lucas scores twice as many points as Taran. Together, they scored 90 points in a game, but Taran also made 3 free throws, adding 3 points to his total score. How many points did each player score?
Without free throws, Taran scored 29 however, in total Taran dropped 32 points
Lucas scored 58 points
Solve this system
2x + 3y = 13
4x − 3y = 5
x = 3 and y = 7/3 or (3, 7/3)
Which table is a function?
4 is a function
In slope-intercept form write the equation for:
y = 2/3x - 4
Each year, roughly 106 computer programmers each make about $105. How much money is this all together? Express your answer both as a power of 10 and as a dollar amount.
1011 and 100,000,000,000
Emily bought a new computer and printer. The computer costs twice as much as the printer. Emily also had to pay a fixed sales tax of $30 for the entire purchase. In total, Emily spent $930. How much did the computer and the printer cost?
The printer costs $300.
The computer costs $600.
Solve this system
2y + x = 4
3x+ 4y = 10
x = 2 and y = 1 or (2,1)
Which is a function?
The mapping diagram represents a FUNction!
Which equation represents the graph?
(D) y = 3x - 1
Simplify the following:
3xy(2xy2)3
24x4y7