A quadratic equation is a parabola and a linear equation is a straight line.
Quadratic Equation is an equation in which the power of variable mostly x is two.
Standard quadratic equation is
Any linear equation have form like
The moon has no atmosphere, no weather and no oceans of water. Its surface is in a perpetual vacuum.
Because the moon's gravity is only one-sixth that of the Earth's gravity, Apollo astronauts had to risk of stumbling or falling.
Astronauts on the moon were protected from the extreme temperatures by their spacesuits. The suits had several layers of insulating material covered by a highly reflective outer layer.