Question

Can someone tell me if I'm doing this right in algebra? I'll post the picture in a sec. Thanks! :)

Answer 1

Ok so what are you answers to the questions you can do?

Answer 2

sorry scratch that i have seen your answers to the first ones bellow sorry. give me a sec

Answer 3

I put them under each numbered question 1-5. I wasn't sure if I was on the right track or what to do to solve for 6.

Answer 4

Ahh thanks. :)

Answer 5

yeah, sorry didn't twig the first time round, right 6 should be fairly simple. you have the graph so go along the x axis until you find 60, then go straight up until you hit the line. then go straight accross to read of a y value

bit wordy so I will draw

Answer 6

does that make sense?

Answer 7

Yes. I'm starting to understand a bit more. So y is what exactly??

Answer 8

your y value is your altitude, and for Q6 you have to read it from the graph, you maths for question 5 looks good so it should be similar to that

Answer 9

Ahh okay.

Answer 10

yeah, it will be but when you read from a graph you may not be able to get it quite as accurately, just because it is a little difficult sometimes to read.

Answer 11

Thanks so much for the help. If you don't mind, could you help with the last two? They looked more confusing to me.

Answer 12

sure, try Q7, your question 5 was spot on so you should be able to do 7 if you get stuck just show where you have got to

Answer 13

ok, so technically this is right, however did you try different values of x until you got y because there are easier way of doing this.

Answer 14

All I did was put the 10 for x because I knew that would equal 110. It didn't seem like a good way of explaining my work though.

Answer 15

ok so, what you did in your head was 1310 - 1200 = 110 therefore what does x need to be to get to that?,
actually that is sort of what you should do but maybe this is a better way of writing it.\[y = 1200 +11x\] let y = 1310 therefore:\[1310 = 1200 +11x\]solve for x

Answer 16

not quite, if you need to get x on the graph you normally would find 1310 on the y axis and then go to the x axis to find y.

I know it sounds like nit picking but imagine if you had a graph when you didn't know what x was in the first place.

Answer 17

so