Question

How do you graph `y<0.75` on the coordinate plane?

Answer 1

Draw a dotted line along `y=0.75`, then shade the region below that line.

Explanation:

We want to indicate on the coordinate plane all points `(x,y)` where `y<0.75`. Since the given inequality does not depend on `x`, the `x`-coordinate can be anything—as long as `y` is less than `0.75`, we're good. So the line we'll draw is dotted horizontal at `0.75` (since `y` must be strictly less than, not equal to, `0.75`), and then we shade the region where the `y`-coordinates are less than that—below the line:

graph{y<0.75 [-3.077, 3.082, -1.54, 1.54]}