In words, when do you realize the answer to a subtraction problem will be negative?
Provide an example
When you are taking away more than you have
100
What is the name for the point (0,0) which is located at the center of the coordinate plane?
Origin
100
Similar Triangles have 2 requirements. What are they?
1) They have the same angles
2) Their sides are proportional (reduce to the same ratio)
200
Evaluate 2(x-4) for x=6
4
200
3+7(4-1)-8+3
19
200
-4+3-6
-7
200
The definition of output
--The number that is the result of substituting a value into an expression/equation
200
How do they refer to slope in construction?
How is the idea of slope used in construction?
"pitch"
--slope is used when building roofs to make sure snow and rain slide off
300
Evaluate (3-x)/2 for x=9
-3
300
5+9/3-6+3(4-2)
8
300
(-2)(-3) / (-6)
-1
300
Find three points on the line y = -3x + 4
(-3, 13)
(-2,10)
(-3,7)
(0,4)
(1,1)
(2,-2)
(3,-5)
300
What is the definition of slope?
What is the slope of a horizontal line?
Why?
Slope: measures steepness of the line
Zero
--a horizontal line has no rise
400
Evaluate 2x+3(x-4) for x=5
13
400
3(4+6)-4(8-2)+9
15
400
Jake goes to the ice cream truck outside of the library after school. Each day he asks a different friend to buy him a push up pop for $3 dollars. At the end of the week, he already asked 5 friends.
Write a problem to model this.
How much does Jake owe?
3 x - 5
400
Create a t-chart for y=2x+1 using x=-2,-1, 0, 1, 2
Does this graph pass through the origin?
Inputs: -2, -1, 0, 1, 2
Outputs: -3, -1, 1, 3, 5
This graph does not pass through the origin!
400
How can you tell the difference between a line with a negative slope and a positive slope?
Draw an example of each:
Negative (decreases from left to right)
Positive (increases from left to right)
500
Evaluate 3(x+6)+(x-2)4 for x=5
45
500
9-6(3-1)+(7-2)2
7
500
The temperature starts out at 10 degrees, by nightfall it is 5 degrees below zero.
How much did the temperature change over the course of the day?
-15 (went down 15 degrees)
500
Create a t-chart for y=1/2x using {x=-4, -2, 0, 2, 4}
Will this graph pass through the origin?
Input: -4, -2, 0, 2, 4
Output: -2, -1, 0, 1, 2
It does pass through the origin!
500
Draw a line that has a slope of 3/4. Make sure to name points on the line.