Sarah walked 1 mile yesterday. Today she will walk at a rate of 3 miles per hour. Which graph shows her two-day total walking distance, d, based on the number of hours, h, that she spends walking today?




Answer:
Graph C
Step-by-step explanation:
If a graph represents the linear equation,
d = mh + b
Here 'm' = slope of the line
b = y-intercept
d = Distance traveled
h = duration or time
For the given question,
Slope of a line represents the rate of change in distance or speed and y-intercept represents the initial distance traveled or the distance traveled on 1st day.
So the equation will be,
d = 3h + 1
Input-output values for the graph,
h 0 1 2 3 4
d 1 4 7 10 13
We find all these points lying on a straight line give in Graph C.