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Musya8 [376]
4 years ago
14

write the slope intercept equation for the line that passes through (-8,11) and is perpendicular t 2x -7y=14

Mathematics
1 answer:
SIZIF [17.4K]4 years ago
4 0
General\ formula:\\y=ax+b\\\\2x-7y=14\\-7y=14-2x\\y=\frac{2}{7}x-2\\\\Line\ is\ perpendicular
 when\ a=-\frac{7}{2}\\y=-\frac{7}{2}x+b\\\\Passes\ through\ (-8,11):\\11=(-\frac{7}{2})*(-8)}+b\\11-28=b\\b=-17\\\\y=\frac{7}{2}-17
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Alice made lemonade for her school's fall festival as a fundraiser. She made a total of 5 gallons, which is 80 cups. They sold,
Anna007 [38]

Answer:

y = 80-16x

Step-by-step explanation:

She made a total of 80 cups and sells 16 cups per hour

So in x hours she would have sold 16 * x = 16x cups

So the number of cups remaining will be;

y = 80-16x

7 0
3 years ago
PLSSSSSSSSSS URGENT I NEED HELP!!!
Novosadov [1.4K]

Answer:

The values of a and b are:

  • a = 2
  • b = 2

Step-by-step explanation:

We know that the slope-intercept form of the line equation

y = ax+b

where

  • a is the slope
  • b is the y-intercept

From the diagram of the line graph, we can fetch the two points

  • (0, 2)
  • (-1, 0)

Determining the slope between (0, 2) and (-1, 0)

\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}

\left(x_1,\:y_1\right)=\left(0,\:2\right),\:\left(x_2,\:y_2\right)=\left(-1,\:0\right)

a=\frac{0-2}{-1-0}

a=2

Thus, the value of a = 2

We know that the value of the y-intercept can be determined by setting x = 0, and determining the corresponding value of y.

From the graph, it is clear

at x = 0, y = 2

Thus, the y-intercept b = 2

now substituting a = 2 and b = 2 in the slope-intercept form of the line equation

y = ax+b

y = 2x + 2         ∵ a = 2 , b = 2

Thus, the line of equation is:

y = 2x+2

now comparing with y = ax+b

Here:

a = 2

b = 2

Therefore, the values of a and b are:

  • a = 2
  • b = 2
7 0
3 years ago
What is the value of the 6 in 34.967
astra-53 [7]
Hundred
that's my answer
4 0
3 years ago
Read 2 more answers
One month Chris rented 2 movies and 12 video game for a total of $44. The next month he rented 5 movies and 3 video games for a
aleksley [76]
M= movie cost
v= video cost

Create two equations with the given information. Solve for one variable in equation one. Use that answer to substitute into equation two.

2m+12v=$44
5m+3v=$29

Solve for one variable in equation 1:
2m+12v=44
Subtract 12v from both sides
2m=44-12v
Divide both sides by 2
m=(44-12v)/2

Substitute m answer in equation two:
5m+3v=$29
5((44-12v)/2)+3v=29
(220-60v)/2+3v=29
Multiply everything by 2 to eliminate the fraction
(2)(220-60v)/2+(2)(3v)=(2)(29)
220-60v+6v=58
220-54v=58
Subtract both sides by 220
-54v= -162
Divide both sides by -54
v= $3.00 cost per video

Substitute v value to find m value:
2m+12v=$44
2m+12(3.00)=44
2m+36=44
Subtract both sides by 36
2m=8
Divide both sides by 2
m=$4.00 cost per movie

Check:
5m+3v=$29
5(4.00)+3(3.00)=29
20.00+9.00=29
29=29

Hope this helps! Please mark me as brainliest if it does. :)
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3 years ago
What is the y intercept of the line x-2y=6
gladu [14]
Y=x-3



please can i have a brainliest
7 0
3 years ago
Read 2 more answers
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