Determine whether the equation is true or false for the given below.
3x - y = 14 when x = 7 and y = 7.
To determine whether the equation is true or false, substitute the given values of x and y into the equation and see if both sides are equal.
3(7) - 7 = 14
21 - 7 = 14
14 = 14
Since both sides of the equation are equal, the equation is true when x = 7 and y = 7.