Like terms share the same variable raised to the same power. For the term \(-4x\), a like term would specifically involve the variable \(x\).
From the list you provided, the like terms to \(-4x\) are:
- \(1.5x\)
- \(x\)
- \(-10x\)
- \(3x\)
The numbers \(-4\), \(-7y\), and \(-4\) are not like terms because they do not contain the variable \(x\).