What is the next number in this sequence?
2,3,5,8,12,

: the next number should be 17.

: they are adding one on each time i.e. +1, +2, +3, +4, +5

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!