Direct/Indirect Variation
System of Equations
Linear inequalities
word problems
Im the special one
100
This is the equation form of direct variation.
y=kx
100
This is the solution to a system of equations.
ordered pair
100
The solution to x+3>8
x>5
100
A gym charges $20 plus $5 per class. This expression represents the total cost for c classes.
y= 20+5c
100
What do you call a sleeping bull?
bulldozer
200
If y varies directly with x, and y=15when x=3x, this is the equation.
y=5x
200
This is the solution to the system:
y=x+2
y =2x-1
(3,5)
200
4x - 7 >= 2x + 9
200
Adult tickets cost $8 and student tickets cost $5. A total of 20 tickets were sold for $130. These two equations model the situation.
What are a+s=20 and 8a+5s=130
200
Why did the bicycle fall over?
Because it was two-tired.
300
If y varies inversely with x, and y=10 when x=2 , this is the value of k.
20
300
This is the solution to the system:
2x + y = 70
x - y = 2
24,22
300
Solve by graphing: y≥2x−3 and y < -x +6
300
A rectangle has a perimeter of 54 cm. Its length is 3 cm more than twice its width. Find the dimensions.
8, 19
300
What do you call a cow with no legs?
ground beef
400
If y varies directly with x, and y=−12 when x=4 this is y when x=−3
9
400
Solve the system:
2x - 3y = 1
5x + 2y = 31
5,3
400
Determine whether (2,5) is a solution: y≥3x−2 and y < -x +8
yes
400
A school bought notebooks and binders. Notebooks cost $2.50 each and binders cost $4 each. They bought 60 items for $183. How many of each did they buy?
38, 22
400
What day is May 10th?
National Clean Up Your Room Day
500
If y varies inversely with x, and y=8 when x=5, this is y when x=10
4
500
Solve the system:
8x +5y = -13
3x + 4y =10
-6, 7
500
y≤x+4 and y>−2x+1
(0,2)
500
A school is selling tickets to a play. Student tickets cost $7 each, and adult tickets cost $12 each. The school sold twice as many student tickets as adult tickets, and made a total of $1,560. This is the number of student tickets and adult tickets sold.
120 students 60 adults
500
What has 4 letters, sometimes has 9 letters, but never has 5 letters?
Yes, that statement is true. “What” has 4 letters, “sometimes” has 9, and “never” has 5.