# ✅ Quiz M4.01
```{admonition} Question
What is a linear regression?
- a) a model that outputs a continuous prediction as the sum of the values of a
**limited** subset of the input features
- b) a model that outputs a binary prediction based on a linear combination
of the values of the input features
- c) a model that outputs a continuous prediction as a weighted sum of the input
features
_Select a single answer_
```
+++
```{admonition} Question
Is it possible to get a perfect fit (zero prediction error on the training set)
with a linear classifier on a non-linearly separable dataset?
- a) yes
- b) no
_Select a single answer_
```