$4$

$8$

Multiple Answer

$1$ point

$5$

Which of the following are true?

Lags are portrayed with a $+$ sign, leads are portrayed with a $-$ sign.

$6$

Lags are portrayed with a $-$ sign, and leads are portrayed with a $+$ sign.

$7$ A lag means the successor starts earlier, and a lead means the successor starts later.

$8$ A lag means the successor starts later, and a lead means the successor starts earlier.