Graph the function.
2 answers:
Answer:
The correct option is D.
Step-by-step explanation:
If a line passing through two points, then the equation of line is
From the given graph it is clear that the line is passing through the points (-1,2) and (0,-1), so the equation of line is
The correct formula for the function is y=-3x-1, therefore the correct option is D.
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Answer:
This is a proportional relationship, the constant of proportionality is 20m/s and it represents that the horse can run 20 meters every second.
Equation: d = 20s, where d=distance and s=number of seconds.
Step-by-step explanation:
In order to find out whether this relationship is proportional, you need to see if the rate at which the horse runs is constant (the same). If you look at the three sets of data (24, 480), (40, 800) and (60, 1200) where the pair is (seconds, meters), you can see that for any two sets of data the change in meters divided by the change in seconds is consistently 20m/s. For example:
Since the constant is 20, we know that the horse can run 20 meters every second. To find the horse's total distance, we need to multiply the rate by the number of seconds that it runs:
d = 20s