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
Pavel [41]
3 years ago
8

Need help I don’t know how to do it

Mathematics
1 answer:
neonofarm [45]3 years ago
5 0

Step-by-step explanation:

the easiest way (at least for me) is to stay with the point-slope form and then transform it to get the slope-intercept form.

the general slope-intercept form is

y = ax + b

a being the slope, and b the y-intercept (the y-value when x = 0).

the general point-slope form is

y - y1 = a(x - x1)

a is again the slope, and (x1, y1) is a point on the line.

so,

1.

y - 1 = 2(x - 4)

y = 2(x - 4) + 1 = 2x - 8 + 1 = 2x - 7

y = 2x - 7

2.

y - 4 = 1/2 × (x - 2)

y = 1/2 × (x - 2) + 4 = x/2 - 1 + 4 = x/2 + 3

y = 1/2 × x + 3 or x/2 + 3

3.

y - 0 = 2/3 × (x - -6)

y = 2/3 × x + 4 or 2x/3 + 4

4.

y - -1 = -3/4 × (x - -8)

y + 1 = -3/4 × x - 6

y = -3/4 × x - 7 or -3x/4 - 7

5.

y - -3 = -1×(x - 4)

y + 3 = -x + 4

y = -x + 1

6.

y - -9 = 4(x - 0)

y + 9 = 4x

y = 4x - 9

You might be interested in
N triangle ABC (see sketch), AD is the angle bisector of the angle A and BH is the height from side AC. The obtuse angle between
Alex Ar [27]

Answer: C

Step-by-step explanation:

We know that \angle AHB=90^{\circ}, and thus by the exterior angle theorem,

90^{\circ}+\alpha=4\alpha\\\\90=3\alpha\\\\\alpha=30^{\circ}

Thus, \angle CAB=2\theta=\boxed{60^{\circ}}

8 0
2 years ago
A farmer wishes to fence a rectangular area behind his barn. The barn forms one end of the rectangle and the length of the recta
Semenov [28]
1. The formula for calculate the perimeter of a rectangle, is:

 P=2L+2W

 P is the perimeter of the rectangle (P=320 feet).
 L is the lenght of the rectangle.
 W is the width of the rectangle.
<span>
 2. The problem says that the length of the rectangle is three times the width, so you have:
</span>
 L=3W

 3. When you substitute L=3W and P=320, into P=2L+2W, you obtain:

 P=2L+2W
 320=2(3W)+2W
 320=6W+2W
 8W=320
 W=320/8
 W=40 feet

 4. The barn forms one end of the rectangle. Therefore the linear feet of fence (x) is:

 x=P-W
 x=320 feet-40 feet
 x=280 feet
<span>
 How many linear feet of fence must he buy?
</span>
 The answer is: 280 feet
5 0
3 years ago
What is the answer to this question?
Artemon [7]
The answer is 2143.57mm
5 0
3 years ago
3 turtles walking.
Elenna [48]

Answer:

Divide 250 by 9.4 to get 26.6

Step-by-step explanation:

To calculate her unit rate, 1 minute, we must divide the distance travelled over 9.4 minutes by 9.4 to see how far she travelled in 1 minute.

8 0
3 years ago
I am having trouble with this question
Marta_Voda [28]
To find the area of a semicircle you would use the formula A=pie * r ^ 2 If you fill in 40 for r you would get 5026.5482
7 0
3 years ago
Other questions:
  • ¿CUAL ES EL PERIMETRO DE UN RECTANGULO SABIENDO QUE SU ANCHO ES 3/4 DEL LARGO Y BEL LARGO MIDE 2,55M?
    11·1 answer
  • How do I do this problem?? I don't get it.
    7·1 answer
  • Jen's has current assets of $2,200, cash of $400, and inventory of $1,300. The firm has accounts payable of $300, long-term debt
    6·1 answer
  • Which two days recorded the highest temperatures?
    6·2 answers
  • Fraction for dividing 4 pies equally between 6 people
    15·1 answer
  • Is (-3,4) a solution of the inequality y&gt; - 2x – 3?
    5·1 answer
  • Sarah and $600 per week and spends 15% of earnings on transportation how much does Sarah Spain and transportation every week pl
    15·2 answers
  • Seven more than three times a number is thirty-one. Write an equation
    9·1 answer
  • 25 - so<br> Is the following number rational or irrational?
    13·2 answers
  • Solve the inequality <br>|7x|+3&lt;21​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!