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yarga [219]
2 years ago
15

Help me find the equation to go with this graph please i give brainlist

Mathematics
1 answer:
Leviafan [203]2 years ago
7 0

Answer:

Step-by-step explanation:

Step 1: The general equation of straight line is

     y = mx + c

c = initial value

m = rate of change

Step 2: Initial value c = 20

Step 3: Rate of change

m = \frac{y2 - y1}{x2 - x1}

Step 4: From the graph, pick two points

x1 = 0, y1 = 20

x2 = 4, y2 = 2

Step 5: By substitution, rate of change m = \frac{21-20}{4-0}

m = \frac{1}{4}

Step 6: Equation of the graph

y = mx + c

y = \frac{1}{4}x + 20

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If a graph of y=-4x +2 were changed to a graph of y=-4x+5, how would the y- intercept change?
Dmitry [639]

Answer:

So if y=-4x+2 was changed to y=-4x+5, then the y-intercept would increase by 3.

The y-intercept was (0,2) then it becomes (0,5) in the new line.

Step-by-step explanation:

The slope-intercept form a line is y=mx+b where m is the slope and the y-intercept is b.

Both of these equations given are in this form.

y=-4x+2 when compared to y=mx+b you see that m=-4 and b=2.

Since b=2 then the y-intercept is 2.

y=-4x+5 when compared to y=mx+b you see that m=-4 and b=5.

Since b=5 then the y-intercept is 5.

So if y=-4x+2 was changed to y=-4x+5, then the y-intercept would increase by 3.

8 0
3 years ago
working together two mathletes solve 32 math problems in a certain amount of time how many problems will 3 mathletes solve if th
dexar [7]

If they together at the same rate for the same amount of time, they will solve 48 math problems,

From the question, we can see that two mathletes solve 32 math problems in a certain amount of time, this can be written as:

  • 2 mathletes = 32 math problems

In order to determine the number of problems for 3 mathletes, this is expressed as:

  • 3 mathletes = x

DIvide both expressions:

  • 2/3 = 32/x

Cross multiply

2x = 3* 32

x = 3 * 16

x = 48math problems

Hence if they together at the same rate for the same amount of time, they will solve 48 math problems,

Learn more on proportion here: brainly.com/question/1496357

6 0
2 years ago
Humans breathe about 15 breaths in a minute. The average
NeX [460]

Answer:

Humans breathe about 300 liters of air in 25 minutes

7 0
2 years ago
julia puts her stickers into arrays in an album. some of her stickers are animal stickers. there are a different number of stick
lina2011 [118]

The total number of stickers :

Page 1 : 28

Page 2 : 24

Page 3 : 72

Page 4 : 48

<h3>Further explanation </h3>

There are several properties in integer multiplication operations

  • 1. closed property

Multiplication between integers will produce integers too

  • 2. commutative property

a x b = b x a

  • 3. associative property

ax (bxc) = (axb) xc

  • 4. identity

ax1 = 1 x a = a

  • 5. distributive  property

* addition

ax (b + c) = axb + axc

* substraction

ax (b-c) = axb - axc

We can use facts to solve multiplication problems

for example :

6 x 7 = (5 x 7) + ( 1 x 7) = 42

we can break facts with 6 into  5s and 1s facts from multiplication above

julia puts her stickers into arrays in an album

From picture (attached) we can find the total number of stickers on each page with 1s,2s,3s and 5s facts

  • Page 1 : 4 x 7 = (2 x 7) + ( 2 x 7) = 14 + 14 = 28
  • Page 2 : 4 x 6 = (1 x 6) + (3 x 6) = 6 + 18 = 24
  • Page 3 : 8 x 9 = ( 3 x 9) + (5 x 9) = 27 + 45 = 72
  • Page 4 : 8 x 6 = (3 x 6) + (5 x 6) = 18 + 30 = 48

<h3>Learn more</h3>

the multiplicative identity property

brainly.com/question/4238982

Keywords : stickers, arrays, album, page, Julia

#LearnWithBrainly

5 0
3 years ago
PLZ Help!!!<br> Look at the pic.
stealth61 [152]
435 being the constant means that is what they started with

Hope this helps :)
8 0
3 years ago
Read 2 more answers
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