Whats the square root of pie, and where do i get it

If u give wrong answer ill report u : )

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.

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.