This question, by asking which graph is decreasing for all values of x, basically asks you to pic the graph that is ALWAYS decreasing. remember that you must read graphs from left to right, the same way you read a book.
the second two graphs you attached can't possibly be your answer. the third graph is constant, until it sharply INCREASES. because the x values start increasing at some point, it's wrong--you only want decreasing x variables. the same thing goes for the fourth graph--it's increasing, then levels out, then continues increasing.
for the first two graphs, follow the shape of the graph from left to right. graph 1 is inclining, going up, INCREASING. graph 2 is falling, and therefore decreasing. graph 2 is the graph that decreases for all values of x.
Incomplete question but the comnplete question is how long will it take the object to travel 4 4/5km
Answer: time taken for the object to travel = 0.47 hrs
Step-by-step explanation:
Step 1 -- The formulae to represent the relationship of speed, distance and time .
Speed = Distance / Time
Where Speed = 10 1/5 km/h
Distance = 4 4/5 km
Step 2 --- Solving
Time = Distance / Speed
= 4 4/5 km / 10 1/5 km/h
= 24/ 5 x 5/ 51 = 24/51 =0.47 hrs
0r
4. 8 / 10.2 = 0.47 hrs
Therefore the time taken for the object to travel = 0.47 hrs
"Standard form" is the form ...
... ax +by = c
where a, b, c are mutually prime integers and the leading coefficient is positive. (If a ≠ 0, then it is "leading". If a = 0, then b is the leading coefficient.)
Of the choices offered, the only one that is equivalent to the given equation is ...
... -x + 6y = 5
_____
However, "standard form" requires the leading coefficient be positive, so an appropriate answer would be ...
... x -6y = -5
or
... 6y -x = 5
____
This is another one for my "broken question" file.