X The arc length function fora curve y = x), where fis an increasing funcijon, is 50:] =/ 1; 7: + 10 dt. 0 {a} Iffhas yintercept 6, find an equation for f. (b) What point on the graph of f is 4 units along the curve from the yintercept? State your answer rounded to 3 decimal places. (x, y) =( 1081,3351 ) x