pt 1
What is slope intercept formula?
y=mx+b
When using compound interest, how do you find the interest earned?
I=A-P
When talking about direct variation, what are 2 of the 4 annotations you need to know
k=y/x, proportional, b=0, y=mx, slope when b is 0
The area of a square is 81 inches. What are the side lengths?
9
All the angles in a triangle should add up to what degrees?
180 degrees
What are the 4 types of transformations?
Translations (slide), Reflections (flip), Rotations (turn), and Dilations (grow/shrink)
y=mx+b, what part of the formula is the slope and what part is the y-intercept
m=slope, b=y-intercept
Write the number below in standard notation
.000452
4.52 x 10-4
A ladder is 12 feet long. It is placed 4 feet away from the wall. How far up the wall is the ladder? Round the nearest whole number
11
Translate the point (1,7) 2 units right and 1 unit down. Give the new point and write the algebraic representation of this rule?
(3, 6) (x+2,y-1)
If the input of a linear function y= 2x - 8 is -4, what is the output?
-16
Which is the ONLY transformation that has a change of orientation of VERTICES (meaning head and feet)
Reflection
What is the TOTAL AMOUNT BALANCE of someone with a loan of 9,500 after 4 years with a 2.25 % annual simple interest rate
855
If a relationship has one positive and one negative, what type of association is it?
negative
The opposite of squaring a number is taking the...
Square root
What is a function?
x values dont repeat
What is the value of x when you have a hypotenuse of 19.7, and a side length of 18. Round to the nearest whole number
8
What is the MAD of the following:
215,182,198,205,200
8
Place in order from least to greatest : Square root of 15, 0.65, 3/4, 4.2, Pi/3, -2/3
-2/3, 0.65, 3/4, pii/3, square root of 15, 4.2
On a graph, how can you determine if graph is proportional?
the line goes thru the origin
An irrational number is a number that...
never ends (terminates) AND never repeats
Is the set a function? (1,4) (-1,4) (3,6) (5,8)
yes
In dilations, what is the term you multiply by called
scale factor
What transformation does not preserve it's congruence?
dilation
What is the y-intercept of the line?
2
The Diameter of a cylinder is 12 centimeters and the height is 9 centimeters, what is the volume ROUNDED TO THE NEAREST HUNDRETHS
1017.88
6
A: y=1/4x + 6
B: (2,6) , (4,4), (6,8)
Which has the greatest rate of change? (cough, cough... slope)
b
What is the length of the hypotenuse when the legs are 6 and 9? Round to the nearest 10th
a2+ b2 = c2
6 2 + 92 = c2
36 + 81 =117
c = 10.8
If you have the point (5,4) and it is rotated 90o counterclockwise, what will the new point be located?
(-4,5)