If you go up the y-value is positive. Join a game Log in Sign up. If the graph is rising from left to right like climbing a hill the slope is positive on a graph you could count up y units divided by right x units.
Plot and label 2 points on the line anywhere on the line.
That will add the equation that Google Sheets used to. If you go up the y-value is positive. A method for carrying out the calculation is Pick two points on the line and determine their coordinates. Find the slope of the line in the picture below.