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
Andre45 [30]
3 years ago
7

Can anyone help me with THIS and the other TWO‼️PLEASE I’m really need HELP

Mathematics
1 answer:
scZoUnD [109]3 years ago
4 0

Answer:

y = 3x +2

Step-by-step explanation:

It is helpful to be acquainted with the parts of at least a couple of different forms of the equation for a line.

You are given the equation of a line in "slope-intercept" form. It looks like ...

... y = mx + b . . . . . . . where m=-1/3 and b=-1

The coefficient of x, which is m, is the slope of the line. That is -1/3 for the given line.

The relationship between the slopes of perpendicular lines is that they multiply to give -1. We say each is the opposite reciprocal of the other. If we let "m" stand for the slope of the perpendicular line, it satisfies the equation ...

...(m)(-1/3) = -1

... m = -1/(-1/3) = 3 . . . . . the slope of the perpendicular line is 3.

____

Here's where another form of the equation for a line is useful. We can write the "point-slope" form* as ...

... y = m(x -h) +k . . . . . . for a line of slope m through point (h, k)

We want our line of slope = 3 to go through the point (1, 5), so its equation can be ...

... y = 3(x -1) +5 . . . . . . . variation of "point-slope" form

The given equation is in slope-intercept form, and the question asks for "the" equation of the line, so we probably should write our answer in the same form as the given equation. We can do this by eliminating the parentheses and simplifying the equation we have.

... y = 3x -3 +5 . . . . eliminate parentheses using the distributive property

... y = 3x +2 . . . . . . collect terms

The graph shows our result is at least plausible: it looks like it is perpendicular, and it goes through the given point.

___

<em>*Comment on point-slope form</em>

Usually, you will see "point-slope" form written as ...

... y -k = m(x -h) . . . . . . . . standard version of "point-slope" form

When our intent is to use this form to get to slope-intercept form, it is more convenient to add k to this equation to get ...

... y = m(x -h) +k . . . . . . . occasionally useful version

You might be interested in
Almost there, then everything is set! Thanks guys
faust18 [17]

Answer:

x = 50°

Step-by-step explanation:

Step 1.

180° - 80° (because there are 180 degrees in a triangle) = 100°

Step 2.

100° ÷ 2 = 50° (because the two angles on the bottom are identical, as this is an isosceles triangle - which we know because the two sides on the left and right are both the same length, 7 units)

Step 3.

Answer: x = 50°

5 0
3 years ago
#13 w is the solution of the equation. 3 = b + 3
Ulleksa [173]
3-3=b+3-3
solve each side
0=b
3 0
3 years ago
Read 2 more answers
WILL GIVE BRAINLIEST! PLEASE HELP I'm doing an exam!! A photograph is reduced by a scale factor of 3/4. If the original length o
Harlamova29_29 [7]
13.5 inches, because if you add 4.5x4 or 9x2 it equals 18, then you just subtract 4.5 from 18 and it’s 13.5
4 0
3 years ago
What is the percent increase <br><br> from 3.49 to 3.89
Juliette [100K]
The answer is 0.4 or 0.40
4 0
3 years ago
A company makes wax candles shaped like rectangular prisms. Each candle is 4 cm long, 3 cm wide, and 10 cm tall. If the company
MatroZZZ [7]

Answer:

34

Step-by-step explanation:

You can solve this problem by finding the volume of the candle first. The formula for rectangular prism is multiplying all three of its dimension. In this case, you would multiply 3, 10, and 4 together to get 120 cm^3. Assuming the question meant "the company used 4080 cm^3 of wax", divide 4080 by 120 to see the number of candles the company made, which is 34.

6 0
3 years ago
Other questions:
  • Janie flips a coin 70 times and records if it comes up heads. If getting heads is a success, what is the probability of a failur
    10·2 answers
  • Finding the complement or supplement of an angle givien a figure​
    7·1 answer
  • What is 6 3/4 as an improper fraction
    14·2 answers
  • What is the slope of (-2,-6) and (-7,-5)?
    6·2 answers
  • Place the following values in order from least to greatest: 3/4, 0.7, 4/5, 65.5%, 0.72
    6·1 answer
  • Plss I need help badly<br><br> Brainliest to first answer
    11·2 answers
  • Helpppppp:((((((this is due tomorrow and I still didn’t turn it in. Pls help if you can and take ur time but pls don’t take too
    14·1 answer
  • True or false, there is a decimal point on every whole number. We just don’t usually write it.
    6·2 answers
  • Solve for x. See picture for full problem. Please and thank you!
    12·1 answer
  • Tessa bought stock in a restaurant for $246.00 Her stock is now worth $297 66 What is the percentage increase of the value of Te
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!