Identifying a Graph of a Proportional Relationship Which graph represents a proportional relationship?
On a coordinate plane, a straight line with negative slope goes through points (2, 6), (4, 5).
On a coordinate plane, a curve opens down.
On a coordinate plane, a straight line with positive slope goes through points (5, 2) and (6, 3).
On a coordinate plane, a straight line with positive slope goes through points (3, 3) and (4, 4).

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m

take the logarithm of both sides (the base of the log doesn't matter):

apply the exponent property - this says that :

distribute the log terms on both sides:

group like terms together:

divide through both sides by the coefficient on :

you can do some additional rewriting here using the properties of the logarithm to simplify things if you like:

a.for lorena 14 hours makes $126   for 16 hours she makes 144

for julie 6 hours makes $72 for 21 hours its $252

b. julie makes more money than lorena julie makes $12 an hour and lorena makes $9  

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