Which function has the greatest rate of change?A. 6x – 7y = 21
B. y = 2x – 2
Answers
Rate of change is the slope.
6x - 7y = 21
Convert to slope-intercept form(y = mx + b):
Subtract 6x to both sides:
-7y = -6x + 21
Divide -7 to both sides:
y = 6/7x - 3
Now it's in the form of y = mx + b, where 'm' is the slope. So the slope here is 6/7.
y = 2x - 2
This is already in slope-intercept form, so the slope here is 2.
For function C, take any two points and plug them into the slope equation.
m = y2-y1/x2-x1
(2, 7) (3, 1)
m = (1 - 7)/(3 - 2)
m = -6/1
m = -6
So the slope of function C is -6.
(1, 2) and (-1, -4)
m = y2-y1/x2-x1
m = (-4 - 2)(/(-1 - 1)
m = -6/-2
m = 3
So function D has the highest rate of change.
*** Function C and D information based on the comments below ***
How can you find unknown lengths or widths in an easy way? 30 points!
Answers
since you are in middle school, I will assume simple shapes such as rectangles and squares
area=legnth times width therefor width=area/legnth and legnth=area/width
The sum of two rational numbers is 3/2. if one of the numbers is-9/10, find the other number,.
Answers
There are one number is X, and another number is -9/10and sum is 2/3.
let other number be= x -9/10+x = 3/2 x = 3/2+9/10 x = (15+9)/10 x = 24/10 x = 2.4
What is the nearest tenths of 23.456
Answers
23.456
Because in the thousandths place 6 is over 5 so you can round 23.456 to 23.46
Because in the hundredths place 6 is more than 5 you can round 23.46 to 23.5
23.456 rounded to the nearest tenth is 23.5
5 x 1 1/2=? Plz help now Plz
Answers
5 X 11 = 55. 55/2 = 27.5 so 27.5 is your answer.
Need help plz. last two parts of a 80 question homework
Answers
72. first multiply 1 1/2 by 2 and you get 3 for 6 dozen, then add 1/2 and you get 3 and 1/2 for 7 dozen. 73. 3+2 is 5, and 2 is 66% of 3, so it is a 66% increase 74. 495 X .07 is 34.65, so she gets $34.65 dollars 75. multiply 7/100 by 40 to get 280/4000, so 280 would be defective