Question

@sourwing

Answer 1

@campbell_st can you please explain???? step by step please

Answer 2

Please you have to apply this formula:
\[y-g(3)=g'(3)*(x-3)\]
so, being g(3)=4, and g'(3)=-7, we can write:
\[y-4=(-7)*(x-3)\]:
or:
\[y-4=-7x+21\]
finally:
\[y=-7x+25\]