You finally have holiday shopping money you put $2.00 away in january, $4.00 away in february, $8.00 away in march, $16.00 away in april and followed this savings pattern through to december how much money do you have to shop with

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!