let's recall that, on the number line, for the positive side, the farther from zero, the larger the number, thus 100 is a much larger number than 10.
now, on the negative side of the number line, the farther from zero, the smaller the number, thus -1 is much much larger number than -1,000,000,000.
is -3 ≥ -15, is -3 larger or equals to -15, well, certainly is not equal but is certainly larger, yes.