Maths - Linear Models


What is a linear model?

A model which works with a straight line.

When creating a linear model, how do you need to change $y = mx + c$?

Instead of using $y$ and $x$ you use variables which reflect the context.

What is the general ice cream sales equation?

$\text{ice cream sales} = m \times \text{weather} + c$

What’s a common critique of a linear model?

It predicts impossible negative values.

What does the gradient in a linear model reflect?

How much one variable changes as the other changes.

What does the $y$-intercept in a linear model reflect?

The initial result without being affected by the $x$ variable.

In a car value over time graph, what does the gradient reflect?

The amount of worth that the car loses per unit of time.

In a car value over time graph, what does the $y$-intercept reflect?

The initial value of the car.




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