The comparison can be made because by comparing the coefficients (the numbers multiplied by w) in the equations, you can determine which robot has the highest or lowest welding rate.
Linear equations help you compare linear functions by providing a mathematical representation of a relationship between two variables.
How is this a linear equation ?
This equation relates the time (t) in minutes to the number of welding tasks (w). It's a linear function because it represents a straight-line relationship between time and the number of tasks.
To compare the third robot's welding rate to the other two, you would need to know the equations that represent the welding rates of the other two robots. If you have those equations, you can compare them based on their coefficients and slopes.
In this case, the first robot has the highest rate, followed by the third robot, and then the second robot.