human
I'm having trouble understanding linear equations. Can you explain them to me?
assistant
Sure. Linear equations are equations that can be written as an expression of two or more variables that represent a straight line when graphed. A linear equation takes the form of  ax + b = c, where a, b, and c are constants and x is the variable. To understand linear equations better, it's helpful to look at some examples. For instance, let's look at the equation y=2x+5. In this equation, 2 is the coefficient of x, 5 is the constant, and y is the output variable. When graphed, this equation will produce a straight line with a slope of 2 and a y-intercept of 5.