Answer:
The line with blue dots is steeper.
Explanation:
The higher the slope means a steeper line.
If we get 2 points from the line with blue dots (1,3) and (2,6) and plug it into the formula to find the slope, (y1-y2) / (x1-x2), the slope is 3.
To find the slope of the line with black dots, we do the same thing just with different coordinate points, (1,2) and (2,4). The slope is 2, which is less than the slope of the other line.
Therefore the line with blue dots is steeper.