Question

Anyone need help in Algebra 1?

Answer 1

Well I don't, but could you help me with my question? I'm in pre-algebra.

Answer 2

Okay.

Answer 3

This is my question: Fred and his brother are both taking driving trips. Fred traveled 409 miles and used 11 gallons of gas. His brother traveled 523 miles and used 13 gallons of gas.
1)Fred told his brother that he gets better gas mileage.Do you agree with Fred? Justify your response by using mathematical language and show any necessary computional work.
2)Is the relationship between miles driven and gas used proportional ? Use a graph below to justify your response.

Answer 4

I especially need help on the second part.

Answer 5

There is a graph on the paper- how do you use that to show if the relationship between miles and gas used is proportional?

Answer 6

For the x-axis, label amount of miles and for the y-axis put the amount of gallons.

Answer 7

OK but if Fred's gas mileage is 37.18 and his brother's is 40.230769, then how do you show that on the graph? How do you know if it is proportional?

Answer 8

How did you get those numbers?

Answer 9

Now I see what you did...

Answer 10

I did the first part- Fred: 409/11=37.18. Fred's brother: 523/13=40.230769.

Answer 11

You can just graph the whole numbers.

Answer 12

Would it still work if you don't use the decimals?

Answer 13

Are you making your graph on paper?

Answer 14

Yes

Answer 15

Then yes you can.

Answer 16

OK now how do you find out if the numbers are proportional? Will I show hat by making the graph, because I also need to explain it in words.

Answer 17

Yes it is proportional because both x and y increase.

Answer 18

Okay I get it now... Thank you SO MUCH for your help! I really appreciate it!

Answer 19

No problem...glad I can help :)

Answer 20

I'm doing algebra b 10 and I need help

Answer 21

Maybe...

Answer 22

Can you simplify 3/5a * 1/a^2

Answer 23

I think it's 3/5a

Answer 24

K thanks