If a line goes up from left to right, what can you say about its slope?

When a line goes up from left to right, it indicates that its slope is positive. This means that as you move along the x-axis (horizontally), the y-coordinate (vertically) increases, showcasing a direct relationship between the two variables. So, in a graph, if you can picture a slope that rises like a ramp, you’ve got yourself a positive slope! Fun fact: The concept of slope can be traced back to ancient civilizations, where it was first used in practical applications like surveying land. The ancient Greeks, particularly, were fascinated with geometric principles, which laid the groundwork for the slope—even before we formalized it with our modern algebraic understanding today!