Answer:
Equation of line in slope-intercept form is given as y = mx + c, where m is the slope and c is the y-intercept.
Since line has a slope of -1/2, equation of line is y = -1/2x + c.
Substitute (10,-3) into equation to find c.
-3 = -1/2(10) + c
-3 = -5 + c
c = 2
Hence, equation of line is y = -1/2x + 2.