Please help asap need this rn what is the value of a + b - c if a=20, b=10 and c= 5 and 1/2
please show how you found it (show your work)

Choose the equation below that represents the line that passes through the point (2, 4) and has a slope of 3. a) y − 4 = 3(x − 2) b) y − 2 = 3(x − 4) c) y + 4 = 3(x + 2) d) y + 2 = 3(x + 4)