1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Anika [276]
2 years ago
6

PLEASE ANSWER ASAP

Mathematics
1 answer:
gladu [14]2 years ago
6 0

Answer:

Step-by-step explanation:

I'll assume these are the equations:

11x + y =  18

4x + y  = 18

-2x - 2y = 18

=======

The easiest approach to graphing, for me, is to rearrange each to y=mx+b (slope-intercept) format:

  • y = -11x+18      y-intercept of 18      (0,18)
  • y = -4x + 18     y-intercept of 18      (0,18)
  • y =   - x -9       y-intercept of -9      (0,-9)

It seems to me that all three can be graphed easily from simply reading the slope and y-intercept values.  Since these are straight lines, all we need is two points for each line, and one is standing out in plain view, the y-intercept:  (0,y-intercept).  The second point can be determined by using whatever value of x makes the calculation easy

An example:  y =  - x -9.  Plot (0,-9) for the y intercept, and then calculate one additional point (e.g., for x = - 9).  (-9,0)  Then connect a straight line between these two points and presto (metric term for magic), a graph. For the first equation, I picked 20 for x.  For x = 20, y = -29.  That was easy, and we have the second point:  (1,-10)

See the attachment for how this was done.  The first points are all for the y-intercept (0,[18 or 9]).  All of the second points were calculated in my head by using a convenient value for x.

This approach doesn't work well for non-linear equations.  There, I find it easier to set up a table of values - a spreadsheet such as Excel is my tool for the calculations.

The attachment also demonstrates the Really Easy Way to graph functions.  DESMOS, a free, and excellent, online calculator.

You might be interested in
Lol suisitctftf ysyajwnw yakahad gwhnqga
Lynna [10]
Im not sure what this is, or how to answer it
4 0
3 years ago
Pls help me that would be great
omeli [17]
No. No. It is not linear because the slope has to be able to be plugged in to any x, y coordinates and be placed on the line. 
4 0
3 years ago
What is (4c)^2d ?<br> c = 5 and d = 8
Arte-miy333 [17]

Answer:

  3200

Step-by-step explanation:

Replace the variables with their values and do the arithmetic.

  (4·5)²·8 = 20²·8 = 400·8 = 3200

6 0
3 years ago
Which expression cannot be used to calculate the sale price of a fish tank that was originally at priced d dollars and is on sal
Drupady [299]
Where S is sales price,
S = .75d

You said which expression CANNOT be used, but I assume you mean can. Let me know if you didn’t.
3 0
2 years ago
Which is the next term in the pattern 1/12, 4/15, 9/18, 16/21
photoshop1234 [79]
I’m guessing it would be 21/24
5 0
3 years ago
Other questions:
  • Please explain!! 20 points and I will mark brainliest
    6·1 answer
  • Solve for x<br> ×+7.72=19
    5·1 answer
  • If f(x) = 3x + 2 and g(x) = 2x – 2, what is (f – g)(x)?
    13·2 answers
  • How to simplify 2a³ × a⁴​
    14·2 answers
  • What is an equation in standard form of an ellipse centered at the origin with vertex (-6,0) and co-vertex (0,4)?
    7·2 answers
  • Easy question please answer :)))
    5·2 answers
  • true or false? A regular polygon is one in which all angles are congruent and all sides are congruent.
    12·1 answer
  • Help me out with number 3
    12·1 answer
  • What equation reoulte from completing the square and then factoring?<br> x2 + 4x-5
    7·1 answer
  • Which statement about a dilation with a scale factor of 3 is true?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!