Answer: The missing value is 5. x = 5.
Explanation:
Plug the values into the equation for slope
(4-1)/(x-1) = 3/4
Simplify
3/(x-1) = 3/4
Since we already know the numerator is 3 and we know the denominator is equal to 4, x-1 must equal 4.
x-1 =5, thus x = 5.