Slopes
What is a slope?
A slope is a description of both directions of steepness
What does M.A.D. stand for?
Mean absolute deviation
13 < 9x + -5 left or right on the number line?
right
10 = 5 + 1x what does x equal?
x = 5 or 5
Find the average: 37,45,25,12,31
9.2
if the line is going down from left to right then is it negative or positive?
Negative
Find the MAD: 12,34,56,78,23
21.12
15 > 4x - 5 left or right on the number line?
left
57 = 6x + 9 what does x equal?
x = 8 or 8
Find the average: 46,27,15,28,11
25.4
if a line is going up from left to right what is it negative or positive
Positive
How do I find MAD?
You have to find the mean, subtract it from all the numbers one by one and then (if they are a negative number then make them all positive), add those together, divide by the amount of numbers
What do I do if I multiply by a negative?
You have to change the sign
5 + 7x = 12 how do you find X?
first, subtract 5 from both sides then divide 7 on both sides
How do you find average?
You have to add all the numbers together and then divide by the amount of numbers
if a line is straight vertically, what is the answer
Unidentified
Find the MAD: 56,34,23,66,11,88
23.7
46 > 4 - 3x = x > -14. What did I do wrong in this equation?
I didn't change the sign
2x - 3= 14 how do you find X?
you have to keep change opposite so make 2x - 3 into 2x + -3. after, you have to add 3 to both sides and then after that step you divide by 2 on both sides
Find the average:11,9,8,3,14,1
7.7
if a line is straight horizontally, what is the answer
0
Find the MAD: 99,87,127,139,143,23,7
43.1
32 < 8 - 4x would the sign be greater than or less than?
it would be greater than because you are dividing by a negative number and when you do that you have to change the sign.
4(x + 7) = 34. what does x equal
x = 1.5 or 1.5
Find the average:45,67,112,156,157,123,67
103.9