What is the gradient of the blue line? Please help.

The gradient of the blue line given in the graph is 4 and this can be determined by using the slope intercept form and point slope form of the line. Given : The graph of the line is given. The following steps can be used to determine the equation of a line given in the graph: Step 1 - First determine the points through which the line passes through that is: Points - (4,0) and (6,8) Step 2 - Use the point-slope form of the line which is given by the equation: where and are the point on the line. Step 3 - Substitute the value of the points in the above equation. Cross multiply in the above equation. 2y = 8(x - 4) y = 4x - 16 Step 4 - Now, compare the above equation with slope-intercept form. m = 4 For more information, refer to the link given below: brainly.com/question/21835898