Ind the slope of the line that passes through (10, 7) and (8, 6). Simplify your answer and write it as a proper fraction, improper fraction, or integer.

Ineed with number 17 i don’t get it at alll

There is a line with slope 1/a going through the point (a, a²). find the equation of the line perpendicular to this line at this point. (don’t let this problem intimidate you! solve the problem as you would if i’d given you specific values. just use variables instead.)

Which answer is the solution set to the inequality |x|< 9? a. x< -9 or x> 9 b. x> -9 and x< 9 c. x> -9 or x< 9 d. x< 9 and x< 9