Function Machines
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Function Machines
Stuck on homework...
David transports bikes to Manchester. He calculates transport costs per bike as the cost of fuel and a driver divided by the number of bikes. For the journey he pays £150 to the driver and £200 for the fuel.
Draw a function machine to work out the cost of transport per bike.
We can't work out what you input. We know the answer but not how you get there!
David transports bikes to Manchester. He calculates transport costs per bike as the cost of fuel and a driver divided by the number of bikes. For the journey he pays £150 to the driver and £200 for the fuel.
Draw a function machine to work out the cost of transport per bike.
We can't work out what you input. We know the answer but not how you get there!
Re: Function Machines
costs as input , function machine divided by number of bikes, output cost per bike?
Seems too simple though
Seems too simple though
Re: Function Machines
Thanks for your reply. It does seem too simple and we are still confused with input x and output y.
If the number of bikes transported is 100. The cost (output y will be £3.50)
Can you have a function machine where the x value is in the middle, rather than inputted?
So 150 ---> +200 ----> divided by x ----> y
If the number of bikes transported is 100. The cost (output y will be £3.50)
Can you have a function machine where the x value is in the middle, rather than inputted?
So 150 ---> +200 ----> divided by x ----> y
Re: Function Machines
function machines can be 2 step, but the input is fixed as 150 and 200 isn't it?
The point if function machines ( as far as I can see!) is that you can alter input , do the "function" and then get an output.
Seems weird that it is a fixed input too. What year group is this aimed at?
The point if function machines ( as far as I can see!) is that you can alter input , do the "function" and then get an output.
Seems weird that it is a fixed input too. What year group is this aimed at?
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Re: Function Machines
I can only think a function machine will allow his costs to fluctuate, as in real life..petrol going up in price, but his lorry always holds the same number of bikes regardless.
Re: Function Machines
Function machines are pretty basic though, used in KS1.
eg.
Input -------> Function..........................> Output
X +3 Y
2 5
4 7
eg.
Input -------> Function..........................> Output
X +3 Y
2 5
4 7
Re: Function Machines
Yippee! We've worked it out...
Input x ---> 1/x ----> times £350 ----> output y
So if x=100 bikes, y= £3.50 ... if x=200, y=£1.75 etc
Homework for Y7 GS.
Luckily the rest of the homework is very straight forward.
Input x ---> 1/x ----> times £350 ----> output y
So if x=100 bikes, y= £3.50 ... if x=200, y=£1.75 etc
Homework for Y7 GS.
Luckily the rest of the homework is very straight forward.
Re: Function Machines
well done!
I like to think I played my part, if only by muddying the waters ,so that you could think strategically....it is my strong point!
I like to think I played my part, if only by muddying the waters ,so that you could think strategically....it is my strong point!
Re: Function Machines
The input is the number of bikes. The costs are fixed values. The output is the cost per bike.