Final answer:
The constant in the expression 5p -2m + 9 is 9, and the coefficients are 5p and -2m.
Step-by-step explanation:
In the expression 5p -2m + 9, the constant is 9 and the coefficients are 5, -2, and 0 (for p, m, and the constant, respectively).
Learn more about Identifying constants and coefficients in an expression