Courses and grades in 9th grade will be visible to UC admission readers, but the grades do not become part of the recalculated HS GPA for UC purposes. Courses taken only count toward UC and CSU a-g subject requirements if grades C or higher are earned.
Regarding community college courses, you can check their a-g subject clearance at University of California A-G Course List . A summary of how repeated courses are treated by UC and CSU is included at https://admission.universityofcalifornia.edu/counselors/_files/documents/csu-uc-comparison-matrix.pdf .