Which number is not in scientific notation? a. 11 times 10 to the 21st power? b. 5.7 times 10 to the 9th power? c. 3.1 times 10 to the -12th power? or d. 1.67 times 10 to the -5th power?

A. it is not in scientific notation because the number in the ones place has to be greater than 0 but less than 9. So 11 is more than 9 so A is not in scientific notation.

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!