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3 years ago

7

Need help with this dont understand it at all

1 answer:

vfiekz [6]3 years ago

6 0

To raise a function up by k units, add k to the whole function
f(x) is 2 units lower than g(x)
so -2 was added

k=-2

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1. What is the value of the y variable in the solution to the following system of equations?

ollegr [7]

Part 1)

we have

$3x-6y=3$ ------> equation A

$7x-5y=-11$ ------> equation B

Multiply by $-7$ the equation A

$-7(3x-6y)=-7*3$

$-21x+42y=-21$ ------> equation C

Multiply by $3$ the equation B

$3*(7x-5y)=-11*3$

$21x-15y=-33$ -------> equation D

Adds equation C and equation D

$-21x+42y=-21 \\21x-15y=-33\\---------- \\ 42y-15y=-21-33\\27y=-54 \\ y=-2$

therefore

<u>the answer Part 1) is the option A </u>

$y=-2$

Part 2)

we have

$3x+y=6$

$y=-3x+6$ ------> equation A

$6x+2y=8$

Simplify Divide by $2$ both sides

$3x+y=4$

$y=-3x+4$ ------> equation B

the lines A and B are parallel lines, because the slope m is equal

so

The system has no solution

therefore

<u>the answer Part 2) is the option D</u>

There is no x value as there is no solution to the system.

Part 3)

we have

$4x+2y=6$ ------> equation A

$x-y=3$

$y=x-3$ ------> equation B

substitute equation B in equation A

$4x+2[x-3]=6$

$6x-6=6$

$6x=12$

$x=2$

therefore

<u>the answer part 3) is the option D</u>

$x=2$

Part 4)

Let

x---------> The number of one-step equations

y---------> The number of two-step equations

we know that

$x+y=1,120$

$x=1,120-y$ -------> equation A

$3x-2y=1,300$ ------> equation B

substitute equation A in equation B

$3[1,120-y]-2y=1,300$

$3,360-5y=1,300$

$5y=3,360-1,300$

$5y=2,060$

$y=412$

therefore

<u>the answer part 4) is the option D</u>

$y=412$

8 0

2 years ago

Read 2 more answers

What is a population?. a population is the set containing all the people or objects whose properties are to be described and an

yarga [219]

I think that is the letter (a)

7 0

3 years ago

Tracy needs to find the length and width of the equipment room where she works. The room is 2 meters longer than it is wide. The

Alekssandra [29.7K]

Answer:

The answer to your question is: width = 3 meters

Step-by-step explanation:

Data

Perimeter = 16 meters

The room is 2 meters longer than its width, then length = width + 2

Perimeter = 2 length + 2 width

16 = 2(width + 2) + 2 width

16 = 2 width + 4 + 2 width

16 = 4 width +4

16 - 4 = 4 width

12 = 4 width

12/4 = width

3 = width

length = 3 + 2 = 5 meters

8 0

2 years ago

Please help. I’ll mark you as brainliest if correct

pashok25 [27]

Answer:

1,-1,3,4

1,6,-2,-4

-4,6,-6,6

Step-by-step explanation:

I believe you just put in the values into the box. Watch the video to see how they did it to make sure it looks like how I did it.

7 0

3 years ago

Describe the transformations from the parent function f(x)=x^2 to the function g(x+2)^2+5

Yanka [14]

Answer: 2 units to the right, 5 units up

Step-by-step explanation:

7 0

2 years ago