Blast from the Past
What are the three types of rigid transformations?
Translations, Reflections, and Rotations
What are at least 2 different ways you can describe slope as a ratio?
Rise/Run
Change in Y/Change in X
Vertical/Horizontal
Y2-Y1/X2-X1
Draw a proportional relationship.
Graph should cross through origin.
What is slope intercept form and what does m and b stand for?
y=mx+b
m = slope
b = y-intercept
What is Mr. Chalhoub's first name?
Ibrahim
Why is a dilation NOT a rigid transformation?
It changes the size of the figure.
Find the slope that passes between the points (0,1) and (3,7).
What is 2?
Draw a non-proportional relationship.
Graph should not cross through origin.
If I have a negative b-value, what does that tell me about the position of the line in the coordinate plane?
The line has a negative y-intercept
How many cats does Mr. Chalhoub have?
2
How would a scale factor of 1/2 affect a figure?
It will decrease the size of the side lengths by 1/2
Lin has a summer reading assignment. After reading the first 30 pages of the book, she plans to read 40 pages each day until she finishes.
What does the slope mean in this situation?
Pages per day
Draw a line with a slope of 2.
Can have any y-intercept, but must show rise of 2 and run of 1.
What is (x,y) called in the equation y=mx+b
It is called a solution to the equation.
Where did Mr.Chalhoub's parents emigrate from?
Lebanon
What do I need to know in order to perform a rotation?
Center of rotation, degrees of turn, direction of turn (counter clockwise or clockwise)
If the slope between these two points is 6, find k.
(3, 6) and (6, k).
k = 24
Graph the equation y=3x+1
Y-intercept at 1
Slope shows a rise of 3 and run of 1
I want to get in shape, so I start running 3 miles a day. I've already run 13 miles this week.
Write an equation for this situation.
y=3x+13
How old is Mr.Chalhoub?
28
What are the differences between supplementary and complementary angles?
Supplementary: side by side, add up to 180 degrees
Complementary angles: side by side, add up to 90 degrees
A restaurant offers delivery for their pizzas. The total cost is a delivery fee added to the price of the pizzas. One customer pays $25 to have 2 pizzas delivered. Another customer pays $50 for 4 pizzas.
What would the slope be? How would you describe it in the context of this problem?
Slope: 12.5
Context: price per pizza
Graph the line y=5. Label it line a
Graph the line x=-3. Label it line b
Horizontal line through y value of 5
Vertical line through x value of -3
I start with a line represented by y=2x. I translate that line down 3 units. My friend says the line can be represented by the equation y=5x
Is my friend correct? Why or why not.
No. The equation of the translated line should be y=2x-3.
Maria