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Can anyone confirm to me what this function calculates?

Function m(t); p=9t; q=p+32; r = q/5; Return r; End function 

Ok so inputting numbers from $0-9$ (in numerical order) the output is as follows: $6.4, 8.2, 10, 11.8, 13.6, 15.4, 17.2, 19, 20.8, 22.6 $ Ok so clearly each value is being incremented by $1.8$. But would it be correct to say that the function adds increments by $1.8$?

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    When the 32 is divided by 5, it takes Celsius and returns Fahrenheit-25.6. I don't think there is a better characterization than Alexander Gruber has given.2012-11-03

4 Answers 4

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$M(t)=\frac{9t+32}{5}$ is the equation of a line with slope $9/5=1.8$ and $y$-intercept $32/5=6.4$.

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    @Fendorio No. This code calculates the height of the line with the equation I wrote above as a function of $t$. It's just a linear equation.2012-11-03
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So, we simplify the calculation to one-line equation $r=\frac{9t+32}{5}$

to find the increment, we separate the division, and do the division, which is $r = \frac{9}{5}t + \frac{32}{5}$ $r = 1.8t + 6.4$

and with $1.8t$, we can prove that the answer was incremented 1.8 when t incremented by 1

EDIT: if we use "Equation of a Straight Line" formula where $y = mx + b$ (or $y = mx + c$ in UK), we can use this formula to form a graph $y = 1.8x + 6.4$, where $m=1.8$, $b=6.4$

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r = q/5 $\rightarrow$ r = (p + 32)/5 $\rightarrow$ r = (9t + 32)/5

Hence r = 9/5t + 32/5

equation of line is y = mx + b, so as we can see this is just equation of line of slope 9/5 and y-intercept of 32/5.

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Just work through the formula:

$r = \frac{q}{5} = \frac{p+32}{5} = \frac{9t+32}{5}$. It multiplies by 9, adds 32 and divides by 5. Or it multiplies by 0.18 and adds 6.4.