Which of the following equations has a graph in the xy-plane with no x-intercepts?

Question

A) y = x² + 3x + 4

B) y = x² - 5x - 6

C) y = 3x²

D) y = 2x - 5

Answer 1

B) x-intercepts at (2, 0) and (3, 0)

C) x-intercept at (0, 0)

D) x-intercept at (0.4, 0)

That leaves A) without an x-intercepts. (The roots are imaginary).