Answer:
4
Explanation:
1) Since we know what points the line passes through, (0,1) and (1,3) we can put it into the formula to calculate the slope. The formula is y1-y2/x1-x2.
2) Input the numbers. 1-3/0-1
3) Calculate the expression, 1-3/0-1=-2/-1=2. The answer is 4