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2 years ago

Slope intercept from two points

Mathematics

1 answer:

Gnoma [55]2 years ago

7 0

Answer:

-2x+6.

Step-by-step explanation:

1) if A(1;4), B(2;2), then the required equation is:

2) $\frac{x-X_A}{X_B-X_A} =\frac{y-Y_A}{Y_B-Y_A}; \ => \ \frac{x-1}{2-1}=\frac{y-4}{2-4}; \ => \ \frac{x-1}{1}=\frac{y-4}{-2};$

3) if to re-write this equation as slop-interception form, then:

y= -2x+6.

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Adriano wants to get a new cell phone plan. Company A: $80 for a new phone in the monthly fee of $45 a month. Company B: she can

Degger [83]

Answer: it will take 2 months.

Step-by-step explanation:

Let x represent the number of months it will take for the total cost for both companies to be equal.

Company A: $80 for a new phone and the monthly fee of $45 a month. This means that the total amount that Company A charges for x months would be

80 + 45x

Company B: she can keep her all sound and pay $85 a month. This means that the total amount that Company B charges for x months would be

85x

For the total cost for both companies to be equal, the number of months would be

80 + 45x = 85x

85x - 45x = 80

40x = 80

x = 80/40 = 2

3 0

2 years ago

I will appreciate if you answer this problem,thanks

aliya0001 [1]

Answer:

None

Step-by-step explanation:

By graphing out the both line segments through graphing software, segments AB and CD have no intersections on the co-ordinate plane.

I've attached a screenshot of what i graphed out.

3 0

2 years ago

Teresa babysits for her neighbors . She charges $13 for the first hour and $10 for each additional hour. Write a rule for the to

Solnce55 [7]

It would be 13 + 10t because she starts with 13 dollar charge in the first hour but every hour after that would be 10 dollars an hour.

7 0

2 years ago

Tom bought n DVDs for a total cost of 15n - 2 dollars. Which expression represents the cost of each DVD?

Gala2k [10]

A. n ( 15.n - 2 )

eg n = 2

2 ( 15.2 - 2)

2 ( 30 - 2)

2 (18)

36 = 18 + 18

3 0

2 years ago

What k-1/3=5/6 equal ?

JulijaS [17]

The value of "K"

$k -\frac{1}{3} = \frac{5}{6}$

MMC (3,6)
3,6 | 3
1,2 | 2
1,1 |__ 3*2 = 6

Solving:
$k -\frac{1}{3} = \frac{5}{6}$
$\frac{6k}{6} - \frac{2}{6} = \frac{5}{6}$
cancel denominators (6)
$6k - 2 = 5$
$6k = 5+2$
$6k = 7$
$\boxed{k = \frac{7}{6} }$

7 0

2 years ago