If the maximum number of swans that can be on the lake is 15 ,what is the restrictions on the domain of the function?

Since you can't have negative swans and domain is on the x axis,

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!