Answer: Gradient (or slope) = 3, the y-intercept is at (0, 0)
Explanation:
The gradient of a line, also known as the slope, is the steepness of the line. When given the equation is slope-intercept form, as we are here, the slope is m in y = mx + b.
This means the gradient is 3.
Since we have "no b value" present, this means it is equal to 0 and the coordinates of the y-intercept is (0, 0).
See attached for more about slope-intercept form and a graph of the line.