Avogadro's number is equal to 6.02 x 1025 6.02 x 1023 6.02 x 1010 6.02 x 1022

The correct answer is: 6.022x10²³

Actually, the more correct answer is its longer version:  6.022140857 × 10²³. Therefore, the correct Avogrado's number is equal to: 6.022x10²³. We use this to relate the molar mass of one substance to the mass of its sample. 

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!