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Bezzdna [24]
3 years ago
11

Y=3x-2

Mathematics
1 answer:
Inessa [10]3 years ago
7 0

Answer:

a) (x,y) = (3, 7) is a solution of the linear equation.

b) The rate of change of the equation is 3.

c) The y-intercept of the equation is -2.

d) <em>Jayne is working in the grocery one day, according to her calculations, renting the lot costs 2 dollars per day and she could earn 3 dollars per hour by selling pastries. How much money does she earn after working 8 hours?</em>

Step-by-step explanation:

a) If (x,y) = (3, 7) is a solution of the linear equation, then f(3) = 7. If x = 3, then the function evaluated at this value is:

y  = 3\cdot (3) -2

y = 7

Hence, (x,y) = (3, 7) is a solution of the linear equation.

b) The rate of change of the equation is represented by the slope of the function, which is the constant that multiplies the indepedent variable (x). Hence, the rate of change of the equation is 3.

c) The y-intercept of the equation is the only constant of the equation. Hence, the y-intercept of the equation is -2.

d) A real-world scenario would be the following: <em>Jayne is working in the grocery one day, according to her calculations, renting the lot costs 2 dollars per day and she could earn 3 dollars per hour by selling pastries. How much money does she earn after working 8 hours?</em>

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notka56 [123]

ANSWER:

  • x – 3y = 2 ...(1)
  • 2x – 6y = 6 ...(2)

On solving eq(1), we get

  • x – 2 = 3y
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Plug the value of x in eq(2)

  • 2x – 6(x - 2/3) = 6
  • 2x – 2(x – 2) = 6
  • 2x – 2x + 4 = 6
  • 0 = 6 – 4
  • 0 ≠ 2

So, given system of equations is not correct.

6 0
3 years ago
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Find the next two terms of the following sequence: 14, 38, 74, 122, 182, 254...
Bezzdna [24]
Let's find the difference between each number.
38-14=24
74-38=36
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254-182=72
As you can tell, you're adding 12 to each difference before. The next difference would be 72+12=84. Let's add.
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Now the next difference would be 84+12=96.
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The interval for mean sale price is $582

According to statement

The given rates are 560, 468, 685, 534, 658, 593

Now,

Sample mean = X / n

Put the values in it and then

(560+ 468+ 685+ 534+ 658+ 593) / 6 = 582.1667

and use this formula S = sqrt [ X2 - n 2 / (n-1) ]

and put the values in these and

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So, The interval for mean sale price is $582

Learn more about SAMPLE MEAN here

brainly.com/question/16794295

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