Comment on the following figures. Based on these two plots, which model assumptions appear violated and which ones appear satisfied? Explain.

Residual

$-1000100$

$30$

$400$

$600$

$800$

Monthly Income

$1000$

: Residual vs$.$ Monthly Income

$1200$

Normal Q$-$Q Plot

Sample Quantiles

$-1000100$

$00000000000000000000$

$30$

$-2$

$-1$

$1$

$2$

Theoretical Quantiles

: Normal Probability Plot