What is the equation of the axis of symmetry of the graph of y=ax^2+bx+c

That would be x=-b/(2a)
that sounds crazy but it works

for all y=ax²+bx+c, the axis of symmetry is

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!