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
morpeh [17]
3 years ago
5

Write the equation of the line that passes through points (-7,8) and (4,-5)

Mathematics
2 answers:
VLD [36.1K]3 years ago
6 0

Answer:

y = -13/11x - 3/11

Step-by-step explanation:

First, find the slope of the line using the slope formula.

m=\frac{y_2-y_1}{x_2-x_1}\\m=\frac{-5-8}{4-(-7)}\\m=-\frac{13}{11}

Then, use the point-slope formula and substitute the values for the variables.

y-y_1=m(x-x_1)\\y-8=-\frac{13}{11}(x-(-7))\\y-8=-\frac{13}{11}x-\frac{91}{11}\\y=-\frac{13}{11}x-\frac{3}{11}

Alex3 years ago
5 0

Answer:

y=-3/11x+67/11

Step-by-step explanation:

y-8=-5-8/4--7(x--7)

y-8=-3/11(x+7)

11y-88=-3x-21

11y=-3x-21+88

11y=-3x+67

y=-3/11x+67/11

You might be interested in
Look at picture <br>y=_<br><br>the height of the baseball after 5 seconds is ___ feet​
Wittaler [7]

Answer:

  • y = -2(x -3)² +24
  • 16 feet

Step-by-step explanation:

We expect the equation for y to be quadratic. Since the table is obviously symmetrical about x=3, we can start with the vertex form ...

  y = a(x -3)² +b

Filling in the values from the first two table points, we get

  For (x, y) = (0, 6):

     6 = a(0 -3)² + b       ⇒   9a +b = 6

  For (x, y) = (2, 22):

     22 = a(2-3)² +b       ⇒   a +b = 22

Subtracting the second equation from the first gives ...

  (9a +b) -(a +b) = (6) -(22)

  8a = -16 . . . . . . collect terms

  a = -2 . . . . . . . . divide by 8

The second equation above tells us ...

  b = 22 -a = 22 -(-2) = 24

So, our equation for y is ...

  y = -2(x -3)² +24

__

The value of y for x=5 is ...

  y = -2(5 -3)² +24 = 16

The height of the ball after 5 seconds is 16 feet.

5 0
3 years ago
Write 2.7 x 10^4 + 120 in scientific notation.
ryzh [129]

Hey there!

2.7 * 10^4 + 120

10^4

= 10 * 10 * 10 * 10

= 100 * 100

= 10,000

2.7 * 10,000 + 120

= 27,000 + 120

= 27,120

Therefore, your answer is. [10,000 * 2.712] because 10,000 * 2.712 is approximately 27,120

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

3 0
2 years ago
In how many ways can 3 cards from a deck of 52 cards can be laid in a row face up?
tresset_1 [31]
Ok slot method
3 slots
1st slot has 52 options
2nd slot has 51 optoins (1 went to first slot)
3rd slot has 50 options (1 went to previous slot)

number of ways=52*51*50=132600 ways
4 0
3 years ago
Read 2 more answers
(5x+20) degrees plus 70 degrees what is x
andre [41]

Answer:

Do you mean 5x+20=70?

If so (Under)

Step-by-step explanation:

5x+20=70

5x=50

x=10

7 0
2 years ago
Help i am confused and im not sure how to answer this
gayaneshka [121]

Answer:

y=(x-4)²

Step-by-step explanation:

(a-b)²=a²-2ab+b²

(x-4)²=x²-2×x×4+4²

(x-4)²=x²-8x+16

7 0
2 years ago
Read 2 more answers
Other questions:
  • What is the simplified form of the expression? √32.√24​
    6·1 answer
  • A college basketball player makes 80% of her free throws. suppose this probability is the same for each free throw she attempts,
    10·2 answers
  • What is 6x+4x-3x the x's are variables so can someone please help me please help me
    11·1 answer
  • What is the meaning of implicit?
    11·1 answer
  • Coleman graphed the relationship between the number of rotations of his front bike tire and the distance
    10·2 answers
  • 100 POINTS FOR BRAINLIEST! according to the image, whats the answer? Answer wisely for the full 100
    13·2 answers
  • Answer FAST PLSSS ITS TO HARDD
    8·2 answers
  • 1 ton is equal to 2000 pounds.how many pounds are in 4 tons, 568 pounds?
    5·2 answers
  • Nick had 34 bottles of water for his wrestling practice.
    14·2 answers
  • What is 4,002 expressed in scientific notation?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!