What is the range of y =|3x + 1|?

[0,∞), {y|y≥0}

Step-by-step explanation:

The graph of y =|3x + 1| is attached.

By observation, we can see that the the least y-value that the graph can take is y =0 (i.e the x-axis) and the greatest y-value that the graph can take is positive infinity.

Hence the range is [0,∞), {y|y≥0}