The school is 2.3 miles away from the library and 1.9 miles away from the post office. The expression (2.3m -1.9m) shows how many miles the library is closer to the school than it is to the post office. Which expression also shows how many miles the library is closer to the school than to the post office?

Abit confused about what you mean, but i think you might be referring to slope intercept form: y = mx + bin that case b, or the y intercept is already given.(0,-1)find the slope by using the formulay2 - y1/x2 - x1the final slope will be 4/2, equivalent to 2.now your equation should look like thisy = 4/2x -1sorry if this didn’t you out!