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WINSTONCH [101]
3 years ago
8

Identify an equation in slope Intercept form for the line parallel to y= -3x+7 that passes through (2,-4)

Mathematics
1 answer:
Montano1993 [528]3 years ago
6 0

Answer:

<h2>y = -3x + 2</h2>

Step-by-step explanation:

The slope-intercept form of an equation of a line:

y=mx+b

<em>m</em><em> - slope</em>

<em>b</em><em> - y-intercept</em>

<em />

We have the equation of a line:

y=-3x+7\to m=-3,\ b=7

Parallel lines have the same slope. Therefore we have the equation:

y=-3x+b

Put the coordinates of the given point (2, -4) to the equation:

-4=-3(2)+b

-4=-6+b               <em>add 6 to both sides</em>

2=b\to b=2

Finally:

y=-3x+2

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The answer should look like this. (___,___) plzzz fast. ​
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Answer:

( -1, 15/2) or ( -1, 7 1/2)

Step-by-step explanation:

Formula: ( (x1 + x2)/2, (y1 + y2)/2 )

1. ( (-4 +6)/2, (8 + 7)/2 ) Plug in

2. ( -2/2, 15/2) Add/Subtract

3. ( -1, 15/2) or ( -1, 7 1/2) Divide

5 0
3 years ago
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BaLLatris [955]

Answer:

Step-by-step explanation:

X = 1/2 arc QS

arc QS is  

360 =145+105+QS

110 = QS

so X is 1/2 QS

X= 55°

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3 years ago
Create a number line to illustrate the following operations and find the solution.
irakobra [83]

Answer:

416

Step-by-step explanation:

26 times 16 is 416

3 0
3 years ago
It is believed that 11% of all Americans are left-handed. In a random sample of 100 students from a particular college with 1012
tia_tia [17]

Answer:

Step-by-step explanation:

We can calculate this confidence interval using the population proportion calculation. To do this we must find p' and q'

Where p' = 14/100= 0.14 (no of left handed sample promotion)

q' = 1-p' = 1-0.14= 0.86

Since the requested confidence level is CL = 0.98, then α = 1 – CL = 1 – 0.98 = 0.02/2= 0.01, z (0.01) = 2.326

Using p' - z alpha √(p'q'/n) for the lower interval - 0.14-2.326√(0.14*0.86/100)

= -2.186√0.00325

= -2.186*0.057

= 12.46%

Using p' + z alpha √(p'q'/n)

0.14+2.326√(0.14*0.86/100)

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Thus we estimate with 98% confidence that between 12% and 27% of all Americans are left handed.

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3 years ago
Triangle PQR hAS vertices P (4,-1),Q(-2,7), and R (9,9). find an equation of the median from R
strojnjashka [21]
A median intersects at the midpoint of the opposite length. The midpoint is:

x,m = (4+-2)/2 = 1
y,m = (-1+7)/2 = 3

The midpoint is at (1,3). With this point and point R(9,9), the equation would be:

y = mx + b, where
m = (9 - 3)/(9 - 1) = 0.75
b is the y-intercept
Substituting any point,
3 = 0.75(1)+b
b = 2.25

Thus, the equation for the median is:

y = 0.75x + 2.25
7 0
3 years ago
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