On the other end of the spectrum, the materials with the lowest conductivities, or best insulators, are glass, ceramic, rubber and some plastics. Not all materials are classified as insulators or conductors, because in the real world, they don't do a particularly good job of either one.
The point where the graph of a function crosses the x-axis or y-axis. y-intercept. The point where the graph crosses the y-axis. In a linear equation of the form y=mx+b. The y-intercept is the constant b. constant of proportionality. The constant ratio between two quantities. EX: 1/4, 2/8, 3/26.
Best Answer: This is probably part of a word problem. The y-intercept is the value of a function when x = 0. So look at your problem, and describe what the value of y when x = 0 means in the context of your problem. ---. For example, if you have the equation. y = 20 - 16x^2, where y represents the height of a dropped object after x seconds, then the y-intercept represents the height when it was initially dropped.