Question

2. Use a graph to find the solution.

You want to set up an aquarium and need to determine what size tank to buy...

Answer 1

Answer: got answer from someone, 12 and 14 were wrong.

Explanation:

connexus unit 8 lesson 1 PRACTICE!

1) B

2) C

3) A

4) C

5) B

6) A

7) D

8) A

9) D

10) A

11) A

12) not C

13) D

14) not C

15) B

Answer 2

The correct option is 3. Capacity of smallest tank is 15-gallons.

Explanation:

The graph shows the relationship between capacity of tank and combined length of fish it can hold.

The line passing through (0,1) and (1,2).

Slope of the line is

`m=(y_2-y_1)/(x_2-x_1)=(2-1)/(1-0)=1`

Slope intercept form of a line is

`y=mx+b`

Where, m is slope and b is y-intercept.

The slope of the line is 1 and the y-intercept is 1, therefore the equation of line is

`y=x+1` ..... (1)

If we want four 2-inch platys, three 1-inch guppies and a 3-inch loach, then the combined length of fish is

`4* 2+3* 1+1* 3=8+3+3=14`

Therefore the combined length of fish is 14.

Put x=14 in equation 1.

`y=14+1=15`

Therefore, the capacity of smallest tank is 15-gallons and option 3 is correct.