Final answer:
The trajectory of a projectile is parabolic and can be represented by the equation y = ax + bx². This is obtained by solving the equation x = Voxt for t and substituting it into the expression for y = Voyt - (1/2)gt².
Step-by-step explanation:
The trajectory of a projectile is parabolic. To obtain the expression y = ax + bx², we can solve the equation x = Voxt for t and substitute it into the expression for y = Voyt - (1/2)gt². By doing this, we obtain an equation of the form y = ax + bx², where a and b are constants. Thus, the equation for the trajectory of a projectile can be represented by y = ax + bx².