a segment whose endpoints are, A(-3,-2) B(9,10) , should be divided into 3 parts that behave like 1: 2: 3. Determine the coordinates of the dividing points.

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!