Answer:x < [tex]\frac{9-4b}{a}[/tex]Step-by-step explanation:Given - ax + 4b > 9 ( isolate the term in x by subtracting 4b from both sides )- ax > 9 - 4b ( divide both sides by - a )Remembering to reverse the inequality symbol when dividing by a negative quantity, thusx < [tex]\frac{9-4b}{a}[/tex]