The unit rate of 15 degrees in 2 hours

The slope of a line is -1/2 . what is the slope of a line that is parallel to it? a. 1/2 b.2 c. -1/2 d. -2

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.)

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9