LAS VEGAS — Zuby Ejiofor’s defense and indefatigable motor got him to the NBA. But his shooting will determine his success now that he’s there.

That’s why Atlanta has encouraged — no, ordered — Ejiofor to let it fly in summer league. And the rookie from St. John’s has done just that, to encouraging results.

“Yeah, they just tell me to go out there and step up with confidence. Let the shots fly. And I think that’s what I’ve done pretty much all summer league,” Ejiofor told The Post. “But just playing to my strengths, my offensive rebounding, my physicality. Those are some of the things, my effort, those are some of the things I flash on a night-to-night basis.”

Make no mistake, it was the rebounding, physicality and, well, strength that were Ejiofor’s strengths at St. John’s. He led the Red Storm to a Big East crown, an NCAA Tournament upset of No. 4 Kansas and the Sweet 16.