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
Elena-2011 [213]
2 years ago
8

A equation for (7,2) and (2,12)

Mathematics
2 answers:
alexira [117]2 years ago
5 0

Well to find this line you want to know the slope and the y-intercept. So find the slope:

(y2-y1)/(x2-x1)

12-2 = 10

2-7 = -5

10/-5 = 2/-1

-2 is your slope

Now for y-intercept, find the point closest to the y-axis. That is the point (2,12), and if your slope is negative 2, that means that if you go up 4 and left 2, you should find the y-intercept:

12 + 4 = 16

16 is your y-intercept

So now lets write this out in an equation:

y = mx + b

m = slope

b = y-intercept

y = -2x + 16

there you go! hope this helps!

jekas [21]2 years ago
5 0

To find the slope of this line we must use the formula <em>m=y2-y1/x2-x1 </em>to<em> </em>write an equation with the 2 points.

12-2/2-7=10/-5

Now we simplify the slope since this is not the simplest form the fraction can get.

10/-5

2/-1

<em>m=-2</em>

From here we can substitute our available info to another form called point-slope form.

The formula for point-slope is <em>y-y1=m(x-x1)</em>

<em>m= slope </em>

<em>y1 and x1= x value and y value of one point.</em>

We are going to use the point 7,2 for this equation

y-2=-2(x-7) This is our final equation.

<em>Hope this helps!</em>

You might be interested in
;)))) <br><br><br><br><br><br> That emoji makes me feel awkward...yeah BYEE
s344n2d4d5 [400]

Answer:

same

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Are you the titantic bc i sure sunk in those eyes &lt;33
FrozenT [24]

Answer:

clever

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Hello I don’t understand question 9 a and b. Please show working out.<br> Thanks
brilliants [131]
A) I would make the positive integer x and then form an equation.

x + 30 = x^2 - 12
x + 42 = x^2
0 = x^2 - x - 42 this can be factorised
(x - 7) ( x + 6) Therefore x = 7 or x = -6

Since the question asks for a positive integer the answer is 7.

B) two positive numbers x and y.

X - y = 3
x^2 + y^2 = 117

Use these simultaneous equations to figure out each number.

Rearrange the first equation

x = y + 3

Then substitute it into the second equation.

(y+3)^2 + y^2 = 117
y^2 + 6y + 9 + y^2 = 117
2y^2 + 6y - 108 = 0
then factorise this.
(2y - 12) (y + 9)

This means that y = 6 or y = -9 but it’s 6 because that’s the only positive number.

Use y to find x

x = y + 3
x = 6 + 3
x = 9

So the answers are x = 9 and y = 6.
3 0
3 years ago
Explain what is 90% of 180
Yakvenalex [24]

Answer:

The answer is 162.

Step-by-step explanation:

To find the percentage of a number:

Turn the percentage into a decimal. 90% to .90

Multiply the decimal by the number you want to find the percentage of. .90 x 180

The answer is the product.

4 0
3 years ago
Hi! im alex, just answer these easy questions and recive your points &lt;3
Delvig [45]

Answer

106 sio so you multiply first

1+1+2+3+4+5+6×15

1+1+2+3+4+5+90

then you add all of them then it will be 106

8 0
3 years ago
Other questions:
  • The junior class is selling Caramel Apple lollipops and Gourmet lollipops to raise money for prom. They profit 50 cents and 75 c
    12·2 answers
  • G(x) = (x - 5)2 + 223<br> DONE
    12·2 answers
  • What is the gcf of 12,30
    10·1 answer
  • Approximately 9 out of 10 smokers began smoking before the age of 21. In a group of 400 smokers, about how many of them started
    13·1 answer
  • Train a can travel a distance of 500 miles in 8 hours assuming the train moves a a constant rate write the linear equation that
    12·1 answer
  • A recipe has a ratio of 2 cups of sugar to 6 cups of flour. How many cups of flour are used for each cup of sugar in the recipe?
    7·2 answers
  • A high school has 900 students. In a
    11·1 answer
  • Complete the table and graph the relation, y=-4x + 3 on grid paper. Choose at least 5X- values some negative some positive you c
    14·1 answer
  • Fiona has a box with 5 red buttons and 9 blue buttons.She randomly selected one button, took it out of the box, then selected an
    10·1 answer
  • 2. Alexis bought four jars of pickles. The total mass of the four jars was 12 kilograms. What is the mass, in grams, of each jar
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!