Question 1021368
For the system to have infinitely many solutions, the ratios of the respective coefficients must be of the same proportion.

To this end, multiply the first equation by 5:

==> 5x + 15y = 5h

Then -(p-2) = 15 and 5h = 15

==> -p+2 = 15, or -p = 13 ==> {{{highlight( p = -13)}}}.

also, {{{highlight(h = 3)}}}