What's the answer to this I need help ??

Find the equation of the line that goes through the points (4, –1) and (2, –5). use slope formula,equation,to find the slope of a line that passes through the points. m = use slope-intercept form, y = mx + b, to find the y-intercept (b) of the line. b = write the equation in slope-intercept form, y = mx + b.

15/16 as a decimal rounded to the nearest hundredth

What is the ordered pair of m’ after point m (5, 6) is rotated 90° counterclockwise?