Term
How can you tell a set of lines are perpendicular?
30 seconds 

Definition
The slopes of the lines will be opposite (or negative) reciprocals. 


Term
How can you tell lines are parallel?
30 seconds 

Definition
The slope of the lines will be exactly the same. 


Term
58 is 29% of what number?
60 seconds 

Definition
Set up proportion.
58 is 29% of 200



Term
Find the percent increase or decrease from 175 to 103.
60 seconds 

Definition
Set up a proportion.
There is a 16% increase. 


Term
Solve and check:
x/(15)7=3
90 seconds 

Definition
Solve for x.
x=150
(150/15)7=3
107=3
3=3 


Term
Solve and check:
5x+8=228
90 seconds 

Definition
Solve for x
x=2.96
5(2.96)+8=22.8
14.8+8=22.8
22.8=22.8



Term
Solve and check.
6x+9+8x=1
90 seconds


Definition
x=5
6(5)+9+8(5)=1
30+940=1
1=1 


Term
Solve and check.
8x122x=6+5x3
90 seconds


Definition
x=15
8(15)122(15)=6+5(15)3
1201230=6+753
78=78 


Term
Solve. Then graph the solution set on a number line and check.
3a15<3
2 minutes 

Definition
3a15<3
a<6
Using 0 to check:
3(0)15<3
15<3 


Term
Solve. Then graph the solution set on a number on a number line and check.
2 minutes 

Definition
x<=2
Using 0 for the check:
0+43*0>=4
0+4>=4
4>=4 


Term
Solve for y, state the m, b, graph and check.
y+2x=1
2.5 minutes 

Definition
y=2x+1, m=2/1, b=1
check: (1,3)
3+(2*1)=1
32=1
1=1



Term
Determine which of the ordered pairs is a solution for the system of equations below.
(1,5),(3,7)
3y+3x=18
2y2x=8
90 seconds 

Definition
3(5)+3(1)=18
15+3=18
18=18
2(5)2(1)=8
102=8
8=8
(1,5)



Term
What is the slope of the line that passes through the points (7,5), (1,8)? Show your work.
90 seconds 

Definition


Term
Calculate the slope of the line in the following graph:
60 seconds 

Definition


Term
Graph the line with a slope of 3/2 that passes through the y intercept of 2.
60 seconds 

Definition


Term
Graph the following inequality. Name m, b, show check and shade.
y>=3x+2
3 minutes 

Definition


Term
Graph the two equations to solve for x and y. State m and b for each and name the point of intersection. Check the point of intersection in both equations.
2x+2y=0
y=x+2
3 minutes 

Definition
equation 1: m=1/1, b=0
equation 2: m=1/2, b=2
intersection (1,1)
check: 2(1)+2(1)=0
2+2=0, 0=0
1=1+2, 1=1
It checks! 


Term
Explain in words how you can determine whether the ordered pair (1,2) is a solution of the system of equations below.
2x+y=4
4x+10y=16
90 seconds 

Definition
You can determine whether the ordered pair (1,2) is a solution of the system of equations by plugging the x and y value in and seeing if the ordered pair checks for both equations. If it checks for both, it is a solution, if it does not, it is not a solution. 


Term
What is the slope of a vertical line? Why?
60 seconds 

Definition
The slope of a vertical line is either no slope or undefined because you cannot define by zero. Check it on your calculators. 


Term
What is the slope of a horizontal line?
60 seconds 

Definition


Term
Use the below equations to tell which lines are parallel or perpendicular.
line 1: y=3x+4
line 2: y=4x+1
line 3: y=(1/3)x8
line 4: y=3x
90 seconds.


Definition
line 1 and 3 are perpendicular
line 3 and 4 are perpendicular
line 1 and 4 are parallel 


Term
One line goes through the points (1,1) and (3, 7) and another goes through (2,0) and (6, 2). Are these lines parallel or perpendicular?
3 minutes 

Definition
Slope of the first line: (2/1)
Slope of the second line: (1/2)
They are perpendicular. 9i 

