Question

In August, Sara and Mel decided to spend a week fishing. On the first day, Sara caught 2 fish, and Mel caught 4 fish. The next day, Sara had 4 fish altogether, and Mel had 8 fish. On the third day Sara had 6 fish altogether while Mel had 12 fish altogether.

1. If the pattern continues, how many fish will each of them have caught by the end of the week? Fill in the rest of the chart.

Fish caught altogether:
Days
1
2
3
4
5
6
7
Sara
2
4
6





Mel
4
8
12


1. If the pattern continues, how many fish will each of them have caught by the end of the week? Fill in the rest of the chart.

Fish caught altogether:
Days
1
2
3
4
5
6
7
Sara
2
4
6





Mel
4
8
12







2. What is the pattern that describes how many fish Sara caught each day? What is the pattern that describes how many fish Sara caught altogether?







3. What is the pattern that describes how many fish Mel caught each day? What is the pattern that describes how many fish Mel caught altogether?






4. What do you notice when you compare Sara’s pattern and Mel’s Pattern?



5. If Sara and Mel continued fishing, how many fish would they have caught by day 10?



this is worth 100 points

Answer 1

Turn into coordinates pair

• (2,4)
• (4,8)
• (6,12)

Slope

• m=8-4/4-2=2

Equation

• y=2x

#1

A week is of 7 days

total fishes Sara has=2(7)=14

Total mel will have

• y=14(2)=28fishes

#2

The each day Sara caught 2fishes

pattern for Sara 's total

• 2d

d is days

#3

Mel also caught 2(2)=4 fishes a day

Mel caught all together is 2(Sara)

#4

They are in proportion to each other

#5

Sara would have 10(2)=20fishes

Mel would have.

• 20(2)=40fishes

Answer 2

Q1)

The number of fish Sara caught increases by 2 each day.

The number of fish Sara caught increases by 4 each day.

`\large \begin{array} c \cline{1-3} & \sf SARA& \sf MEL\\\sf Days & \sf fish\:caught & \sf fish\:caught \\& \sf altogether & \sf altogether\\\cline{1-3} 1 & 2 & 4 \\\cline{1-3} 2 & 4 & 8 \\\cline{1-3} 3 & 6 & 12 \\\cline{1-3} 4 & 8 & 16 \\\cline{1-3} 5 & 10 & 20 \\\cline{1-3} 6 & 12 & 24 \\\cline{1-3} 7 & 14 & 28 \\ \cline{1-3}\end{aligned}`

Q2)

Sara caught 2 fish each day.

The pattern that describes how many fish Sara caught altogether is:

2 times the number of days

Q3)

Mel caught 4 fish each day.

The pattern that describes how many fish Mel caught altogether is:

4 times the number of days

Q4)

The number of fish Mel caught altogether is twice the number of fish Sara caught altogether.

Q5)

The number of fish Sara and Mel would have caught by day 10:

• Sara = 10 × 2 = 20 fish
• Mel = 10 × 4 = 40 fish