The diagram represents the circular floor under the dome of a state capitol building. the diameter is 40 ft. find the circumference of the floor. approximate as 3.14.

Circumference = 2*pi*r
C = 2*3.14*r
C = 2*3.14*(d/2)
C = 3.14*d
C = 3.14*40 ft.
C = 125.6 ft.

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!