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l=510-42 t
The old road length,
l, in meters, after
t hours of milling is given by the equation. How many meters of old road are removed for each hour of milling?

$l=510-42 t$ $\newline$ The old road length, $l$ , in meters, after $t$ hours of milling is given by the equation. How many meters of old road are removed for each hour of milling?

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Write linear functions: word problems

Full solution

Q.

l=510-42 t

\newline

The old road length,

l

, in meters, after

t

hours of milling is given by the equation. How many meters of old road are removed for each hour of milling?

Identify Equation: The equation given is $l = 510 - 42t$ , where $l$ represents the length of the old road in meters after $t$ hours of milling. To find out how many meters of old road are removed for each hour of milling, we need to look at the coefficient of $t$ in the equation. This coefficient represents the rate at which the road length decreases per hour.
Analyze Coefficient: The coefficient of $t$ is $-42$ . This means that for each hour of milling, $42$ meters of the old road are removed. The negative sign indicates that the length of the road is decreasing.

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