Am I correct? If not, why?

Aline has a slope of and a y-intercept of –2. what is the x-intercept of the line?

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

1c) the number 131 is a term in the sequence defined by the explicit rule f(n)=5n-4. which term in the sequence is 131? 2a) write the first four terms of the function f(n)=n^2-1 2b) what is the 10th term of the sequence defined by the explicit rule f(n)=n^2-1 2c) the number 224 is a term in the sequence defined by the explicit rule f(n)=n^2-1. which term in the sequence is 224?