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
aleksley [76]
3 years ago
12

Please help!!! Need answers today!!

Mathematics
1 answer:
MariettaO [177]3 years ago
7 0

1) Equation in Point Slope form is y-20=-\frac{55}{4}(x+2)

2) So, linear equation of line with slope of -1/2 and point (3,5) is y=-\frac{1}{2}x-6\frac{1}{2}

3) a) Slope = -1/2 and point is (4,3)

b) Slope intercept form is y=-\frac{1}{2}x+7

c) Standard form is: \frac{1}{2}x+y=7

d) x-intercept is (14,0) and y-intercept is (0,7)

Step-by-step explanation:

1) Write an equation in point slope form to model the table.

The standard form of point slope form is:

y-y_{1} = m(x-x_{1})

Finding Slope m:

Slope can be find using:

m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}

where y_{2}=132,y_{1}=20,x_{2}=-10,x_{1}=-2

Putting values:

m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}\\m=\frac{132-20}{-10-(-2)}\\m=\frac{132-20}{-10+2}\\m=\frac{110}{-8}\\m=-\frac{55}{4}

So, slope is -55/4 and considering x₁= -2 y₁=20

Putting values in point-slope form:

y-y_{1} = m(x-x_{1})\\y-20=-\frac{55}{4}(x-(-2))\\y-20=-\frac{55}{4}(x+2)

So, Equation in Point Slope form is y-20=-\frac{55}{4}(x+2)

2) Write a linear equation for the line having Slope = -1/2 and point (3,5)

We will use Point Slope form:

y-y_{1} = m(x-x_{1})

Putting values:

y-5=-\frac{1}{2}(x-3)\\y-5=-\frac{1}{2}x-\frac{3}{2}\\y=-\frac{1}{2}x-\frac{3}{2}+5\\y=-\frac{1}{2}x-\frac{3+5*2}{2}\\y=-\frac{1}{2}x-\frac{13}{2}\\y=-\frac{1}{2}x-6\frac{1}{2}

So, linear equation of line with slope of -1/2 and point (3,5) is y=-\frac{1}{2}x-6\frac{1}{2}

3) y-3=-\frac{1}{2}(x-4)

a) identify the slope and point

The standard form of point slope form is:

y-y_{1} = m(x-x_{1})

So, Slope = -1/2 and point is (4,3)

b) Convert to slope intercept form

The slope-intercept form is:

y=mx+b

Solving:

y-3=-\frac{1}{2}(x-4)\\y-3=-\frac{1}{2}x-\frac{1}{2}*-4\\y-3=-\frac{1}{2}x+2\\y=-\frac{1}{2}x+2+5\\y=-\frac{1}{2}x+7

So, Slope intercept form is y=-\frac{1}{2}x+7

c) Convert to standard form:

Standard form is : ax+by=c

Solving:

y-3=-\frac{1}{2}(x-4) can be written as y=-\frac{1}{2}x+7

y=-\frac{1}{2}x+7\\\frac{1}{2}x+y=7

So, Standard form is: \frac{1}{2}x+y=7

d) Find the intercepts

y-y_{1} = m(x-x_{1})

  • For x-intercept set y=0

y-3=-\frac{1}{2}(x-4) can be written as y=-\frac{1}{2}x+7

y=-\frac{1}{2}x+7\\0=-\frac{1}{2}x+7\\\frac{1}{2}x=7\\x=7*2\\x=14

x-intercept is (14,0)

  • For y-intercept set x=0

y=-\frac{1}{2}x+7\\y=-\frac{1}{2}(0)+7\\y=7

y-intercept is (0,7)

So, x-intercept is (14,0) and y-intercept is (0,7)

Keywords: Point Slope Form

Learn more about Point Slope Form at:

  • brainly.com/question/12941985
  • brainly.com/question/6431715
  • brainly.com/question/9801816

#learnwithBrainly

You might be interested in
I need help answering 1,2, and 3
EleoNora [17]

Answer:

I do not know sry

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
A rancher has 200 feet of fencing to enclose two adjacent corrals
Arturiano [62]

Answer:

a) Each corral should be 33⅓ ft long and 25 ft wide

b) The total enclosed area is 1666⅔ ft²

Step-by-step explanation:

I assume that the corrals have identical dimensions and are to be fenced as in the diagram below

Let x = one dimension of a corral

and y = the other dimension

 

(a) Dimensions to maximize the area

The total length of fencing used is:

4x + 3y = 200

4x = 200 – 3y

x = 50 - ¾y

The area of one corral is A = xy, so the area of the two corrals is

A = 2xy

Substitute the value of x

A = 2(50 - ¾y)y

A = 100 y – (³/₂)y²

This is the equation for a downward-pointing parabola:

A = (-³/₂)y² + 100y

a = -³/₂; b = 100; c = 0

The vertex (maximum) occurs at  

y = -b/(2a)  = 100 ÷ (2׳/₂) = 100 ÷ 3 = 33⅓ ft  

4x + 3y = 100

Substitute the value of y

4x + 3(33⅓) = 200

4x + 100 = 200

4x = 100  

x = 25 ft

Each corral should measure 33⅓ ft long and 25 ft wide.

Step 2. Calculate the total enclosed area

The enclosed area is 50 ft long and 33⅓ ft wide.

A = lw = 50 × 100/3 = 5000/3 = 1666⅔ ft²

6 0
2 years ago
A meteor crater is 3300 feet in diameter. Approximate the distance around the crater. Use 3.14 for pie.
Afina-wow [57]

circumference = diameter x PI

 3300 *3.14 = 10,362 feet

7 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=2x%5E%7B2%7D%20-4x%20%2B2" id="TexFormula1" title="2x^{2} -4x +2" alt="2x^{2} -4x +2" align="a
Lostsunrise [7]

2 {x}^{2}  - 4x + 2 \\  \\ 2(x  {}^{2} - 2x + 1 )\\    \\ 2(x - 1)  {}^{2}

7 0
2 years ago
Read 2 more answers
And slope of the linear equation y+8=3(x−5)<br> ?
Triss [41]

Answer:

slope:  3; vertex:  (5, -8)

Step-by-step explanation:

Compare the given y+8=3(x−5) to the slope-vertex form y - k = m(x - h).  We see that the slope, m, must be 3 and the vertex must be (h, k):  (5, -8).

7 0
2 years ago
Other questions:
  • 4000 principal earning 7% compounded annually , 7 years
    7·1 answer
  • Find the x value do that the line through the points (x,-9) and (0,1) has a slope of -4 PLEASE ANSWER
    12·1 answer
  • To solve the inequality -4x &lt; 8, you would divide both sides of the inequality by -4. true or false
    15·1 answer
  • A DVD priced $17.50 cost $18.81 after tax. What was the percent of sales tax?
    8·1 answer
  • a hose fills a tank at rate of 30 gallons per minute. what is rate in liters per hour. 1 gallon=3.79 liters
    14·1 answer
  • What is the domain of the function Y equals square root X
    8·1 answer
  • Convert 11/3 from an improper fraction into a mixed number
    9·2 answers
  • 4
    7·1 answer
  • PLEASE HELP ASAP!!!!!!
    11·1 answer
  • Rewrite the following equation in slope-intercept form.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!