Question

A young sumo wrestler decided to go on a special high-protein diet to gain weight rapidly. After 1 months, he weighed 140 kilograms. He gained weight at a rate of 5.5 kilograms per month.
Let y represent the sumo wrestler's weight (in kilograms) after x months.

Answer 1

So how would you go about this equation?

Hint:
Current weight = (rate at which he's increasing)*(some variable for months) + (what he originally weighs)

Answer 2

it'll be in a similar y = mx + b format

Answer 3

ok that seems easy

Answer 4

It is
You just have to calculate his original weight and everything else is pretty much given
Let me know what you get!

Answer 5

im either getting 145.5 or 140.5

Answer 6

and im also simple minded so this seems easy but for me when i think about it its hard

Answer 7

In one month he gained 5.5 kg

So he now weighs 140 kg

How much did he weigh before he gained 5.5 kgs?

Answer 8

135 kg right

Answer 9

134.5 kg

Answer 10

Becareful it's 5.5 not 5

Answer 11

Spot on

Answer 12

ok so before he did this diet he weighted 134.5 and then 1 month later he weights 140

Answer 13

so what then

Answer 14

the 1 month is meant to be 11 my bad heh

Answer 15

Yes

So we have so the information we need

Look at that original hint I gave you

y = mx + b

y and x are our variables (they're just random letters where we can plug stuff into one of them to get a number for the other letter)

x is for months
y is for his final weight after x months

m is our slope or you can call it the rate of change
And the question gives us this. He's gaining 5.5 kg every month so our m is 5.5

B is the y-intercept.
This is the weight he started off with and we just calculated it.

So can you put it so together now?

Answer 16

140=5.5*11+134.5

Answer 17

Hmmm we want an equation so that means we need to keep the x and y as is

So that way we can plug in a number for the month and find out how much he weighs now
(Also I think you meant you 1 and not 11 because otherwise that math wouldn't work out haha)

Answer 18

well i made a mistake and i didnt know it but when i looked back a my question it said 11 so idk sry

Answer 19

Y=5.5x+134.5 is that how u would put it

Answer 20

If you put x and y back in to it, it'll all be good

Answer 21

yay! good job!! You're getting the hang of it

Answer 22

ok so let get this right the right answer is going to be Y=5.5x+134.5 correct

Answer 23

Yup!

Answer 24

ok thank you

Answer 25

No problem!