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mrs_skeptik [129]
3 years ago
15

7. Which of the following is an equation of the line through (11, -3) and (7, 9)?

Mathematics
2 answers:
pantera1 [17]3 years ago
6 0

Answer:

y=-3x+30

Step-by-step explanation:

natali 33 [55]3 years ago
6 0

Answer:

<h3><u>y = -1/5x + 24/5</u></h3>

Step-by-step explanation:

<h2><u>in order to get an equation of a line :</u></h2><h3><u><em>Get the gradient : </em></u></h3>

which is (y2-y1)/(x2-x1)

= 9-11 / 7- -3

= -2/10

gradient = -1/5

<h3><u>Get the midpoint :</u></h3>

which is (x1 + x2)/2 , (y1+y2) / 2

= 11+7 = 18/2 = 9

= -3 + 9 = 6/2 = 3

midpoint = (9,3)

now create the equation using the formula

Y1 - y = m(x1 - x)

where m is the gradient

now place the midpoint values in the equation

y- 3 = -1/5 (x-9)

y - 3 = -1/5x +9/5

y=-1/5x + 9/5 +3

<h3><u>y = -1/5x + 24/5</u></h3>
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Tasha wants to graph a line that is parallel to the line with equation y = 3x. Give two examples of linear equations that repres
Arturiano [62]

When two lines are <em><u>parallel, that means they have the same slope! </u></em>

The slope is the coefficient of x

In the equation y = 3x, <u>the slope is 3 </u>

An example of a line that is above y = 3x is ...

y = 3x + 2

The "+2" <em>shifts the line up </em>by 2 on the y axis

An examples of a line that is below y = 3x is ...

y = 3x - 3

The "-3" <em>shifts the line down</em> by 3 on the y axis

5 0
3 years ago
How do I solve this? <br>8(7+23)=8(7)+8()
rodikova [14]
USE PEMDAS
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6 0
3 years ago
Each polygon pair is similar. Find the missing side length
ohaa [14]

I'll do problem 1 to get you started.

The vertical sides are 3 and x for the left and right figures.

The horizontal sides are 15 and 60 for the left and right figures.

The corresponding sides form fractions which are equal (due to the nature of the similar polygons)

3/x = 15/60

3*60 = x*15 ... cross multiply

180 = 15x

15x = 180

x = 180/15 .... divide both sides by 15

x = 12

----------

Another way you can see this is note how the jump from 15 to 60 is "times 4", so the jump from 3 to x must also be "times 4" to keep the same proportion

3 ---> x = 3*4 = 12

Or you could set up the proportion

60/15 = x/3

4 = x/3

x/3 = 4

x = 3*4

x = 12

-----------

<h3>Final Answer: 12</h3>
3 0
3 years ago
I need some help pls​
natali 33 [55]

Answer:

안녕하세요 멍청한 새끼들. 시험하고 빨리 답이 필요해 .. 네 개년들 고마워

7 0
3 years ago
Out of a total of 3000 available parking spaces in a mall parking lot, 1875 are taken. What percent of the parking spaces are ta
Iteru [2.4K]

Answer:

62.5%

Step-by-step explanation:

1875 diveded by 3000 = 62.5

6 0
3 years ago
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