![itaheart101](/avatars/37839.jpg)
itaheart101
20.09.2019 •
Mathematics
7x−y=9: positive or negative rate of change?
13x+y=2: positive or negative rate of change?
x: -4, -1, 2, 5, 8
y: -5, -3, -1, 1, 3 : positive or negative rate of change?
Solved
Show answers
More tips
- C Computers and Internet Отправляем смс через интернет: легко и просто...
- H Health and Medicine Want to Lose Weight? Here s How Many Calories You Need Per Day...
- H Health and Medicine How Many Ribs Do Humans Have?...
- C Computers and Internet Dropbox: What is it and How to Use it...
- F Family and Home Choosing the Right Car Seat for Your Child: Tips and Recommendations...
- C Computers and Internet Е-head: How it Simplifies Life for Users?...
- A Auto and Moto How many blood alcohol level units are allowed in Russian traffic laws?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
- H Health and Medicine How to Deal with Heat Stroke?...
- H Health and Medicine Sunstroke: Causes, Symptoms, and Precautions...
Answers on questions: Mathematics
- M Mathematics What is the sum of the coefficients of the expression: 3x to the 4th power+5x squared+x...
- M Mathematics If f(x)=8x and g(x)=2x+1, find(f•g)(x). a) 16x+1 b) 10x+1 c) 16x+8 d) 16x^2+8x...
- M Mathematics What is the slope and y-intercept of the graph of the equation 3y + 2x = 9? slope = y intercept =...
- M Mathematics Consider the following system of equations: -1/3x^2 = -5/6 + 1/3y^2 and 5y^2 = 25/2 - 5x^2 how many solutions does the system have?...
- M Mathematics 2.a.ii) remember taylor s formula: use taylor s formula to calculate the exact values of higher derivatives {f [0], f [0], f [0], …, f[0], f[0]} of the function f[x] defined by the...
- M Mathematics Construct this by using sides of 1+squareroot5 (isosceles triangles). show all corresponding work and write neatly 3. construct a 36° angle....
- M Mathematics Use the midpoint rule for the triple integral to estimate the value of the integral. divide b into eight sub-boxes of equal size. (round your answer to three decimal places.) 1 ln(1...
- M Mathematics Convert 1000100 two to base sixteen...
- M Mathematics Convert the binary expansion of each of the following integers to a decimal expansion the decimal expansion of (1 1001)_2 is...
- M Mathematics Convert the following inequality into an equation by adding a slack variable. 5x1 +4x2 +6x3 122 choose the correct corresponding equation. o a. 5x1 +4x2 + 6x3 + s1 = 122 о в. 5х,...
Ответ:
So firstly you need to rearrange the equations to get them in this form.
7x-y=9
7x=y+9
y=7x-9
Therefore this has a positive rate of change of 7
13x+y=2
y=-13x+2
Therefore this has a negative rate of change of -13
The last one is a little more difficult... we can get the gradient using two of these coordinates and using the formula of:
m=(y2-y1)/(x2-x1), where y2 is the y-coordinate of the second point, y1 is the y-coordinate of the first point, etc...
I'll use the points, (5, 1) and (8,3)
Therefore,
m=(3-1)/(8-5)
m=2/3
Therefore this has a positive gradient of 2/3
Hope all that helps :)
Ответ:
7+4i+9+5i-2-5i
7+4i+9-2
4i+7+9-2
4i+14