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
nignag [31]
1 year ago
9

Which is not an equation of the line going through (3, -6) and (1, 2)?

Mathematics
1 answer:
777dan777 [17]1 year ago
4 0

Answer:

B, C

Step-by-step explanation:

The equation of a line can be given by y -y₁= m(x -x₁), where m is the slope. This is also known as the point-slope form.

\boxed{ slope = \frac{y _{1} - y_2 }{x_1 - x_2} }

Slope of the line

=  \frac{2 - ( - 6)}{1 - 3}

=  \frac{2 + 6}{ - 2}

= \frac{8}{ - 2}

= -4

<em>Substitute m= -4 into the equation:</em>

y -y₁= -4(x -x₁)

<em>Substitute a pair of coordinates into (x₁, y₁):</em>

Let's start by substituting (1, 2).

y -2= -4(x -1)

This gives us the same equation as D, making D an incorrect option. Note that the question asks for which is not the correct equation.

Let's change the above into the slope-intercept form, where by y is the subject of formula.

<em>Start by expanding the right-hand side:</em>

y -2= -4x +1

<em>+</em><em>2</em><em> on both sides:</em>

y= -4x +3

This equation is not the same as C. C is thus the correct option.

Let's check for options A and B.

The equation in option B is not the correct equation either as they have substituted (2, 1) instead of (1, 2) into (x₁, y₁). Thus, option B is also correct.

y -y₁= -4(x -x₁)

Substitute (3, -6) into (x₁, y₁):

y -(-6)= -4(x -3)

y +6= -4(x -3)

This is the same as option A, making option A incorrect too.

You might be interested in
Which numbers are solutions to the inequality x &lt; −7, using the replacement set {−15, −10.5, −7.2, −7, 0}?
slamgirl [31]
Find all the number in the set that are less than -7.

The 'bigger' the negative number seems, the smaller it is.

So -15, -10.5, and -7.2 are all less than -7.
4 0
3 years ago
Read 2 more answers
Should the government print more currency to help the poor?
zvonat [6]

Answer:

Yes and No.  

Step-by-step explanation:

The reasoning behind this is that the poor need to be helped, but it would also be bad because it would make drugs easier to come across, and they can ruin many people's lives.  

4 0
2 years ago
Multiply the polynomials (x + 6)(2x - 2). What is the product in the form ax2 + bx +c?
daser333 [38]

Answer:

x² + 10x - 12

Step-by-step explanation:

Each term in the second factor is multiplied by each term in the first factor, that is

x(2x - 2) + 6(2x - 2) ← distribute both parenthesis

= 2x² - 2x + 12x - 12 ← collect like terms

= 2x² + 10x - 12

8 0
2 years ago
Luigi is an urban planner. As an independent contractor, he charges $140 fee plus $25 per hour for each contract with the city.
Bess [88]

Answer:

D. Y = 25x + 140

Step-by-step explanation:

4 0
2 years ago
Letter A (please show work!) thanks
jeka94
(37 1/2) /100
37.5/100
anything divided by 100 means you move the decimal point to the left two spaces
answer=0.375
8 0
3 years ago
Other questions:
  • What is 1.64 as a fraction
    10·2 answers
  • Which function represents the graph below?
    6·2 answers
  • I need help ASAP I don’t understand this
    5·1 answer
  • How to idenify independent and dependent variables
    9·1 answer
  • From start to finish, a machine can fill a bottle of water, seal it, label it, and pack it in 8.6 seconds. About how many bottle
    8·2 answers
  • Item 36 Solve for x. x ÷ 9 = 8 x = 72 x = 17 x = 1.11 x = 1
    9·1 answer
  • Find <br><br> a.<br> 107°<br> b.<br> 117°<br> c.<br> 63°<br> d.<br> 73°
    6·2 answers
  • Determine whether each sequence is an arithmetic sequence. Write yes or no. Explain. 7, 10, 13, 16, ...​
    9·1 answer
  • For parties of six or more, a restaurant adds a 20% gratuity (or tip). If a
    12·1 answer
  • Which of these lines is perpendicular to the line y = 3x + 2?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!