Below are some examples of these types of functions: y = 2x + 1 y = 3x2 - 5x + 3 y = Sin(x) x2 + y2 = 4 y2 = x3 - Tan(x). These algebraic functions are all different and have different properties. It is often useful to have a visual way to look at these functions. Graphs provide such a tool.
Did you know: About 78% of the Average Human Brain Consists of Water. The human brain is the main part of the nervous system, coordinating all the functions of the body via electric impulses. The human brain hosts approximately 80 to 120 billion nerve cells and it is largely made of water. Water is of major importance to all living things; in some organisms, up to 90% of their body weight comes from water. Up to 60% of the human body is water, the brain is composed of 70% water, and the lungs are nearly 90% water. Lean muscle tissue contains about 75% water by weight, as is the brain; body fat contains 10% water and bone has 22% water.
99% of the mass of the human body is made up of only six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. Every organic molecule contains carbon. Since 65-90% of each body cell consists of water (by weight), it isn't surprising that oxygen and hydrogen are major components of the body.