anonymous
  • anonymous
The graph below shows the distances, in miles, that a dragonfly can travel in a certain number of hours: A graph titled Motion of a Dragonfly shows Time in hours on the x axis and Distance in miles on the y axis. The scale on the x axis shows number from 0 to 10 at increments of 2 and on the y axis the numbers are shown from 0 to 250 at increments of 50. A straight line joins the ordered pairs 0, 0 and 2, 50 and 4, 100 and 6, 150 Based on the graph, what is the dependent variable, the equation relating the two variables, and how far will the dragonfly travel in 24 hours if it continues t
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
The dependent variable is distance, the equation is y = 25x, and the dragonfly will travel 600 miles. The dependent variable is distance, the equation is x = 25y, and the dragonfly will travel 720 miles. The dependent variable is time, the equation is y = 25x, and the dragonfly will travel 600 miles. The dependent variable is time, the equation is x = 25y, and the dragonfly will travel 720 miles.
anonymous
  • anonymous
@Deeezzzz
anonymous
  • anonymous
@d3v13

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More answers

anonymous
  • anonymous
@mathstudent55
anonymous
  • anonymous
someone plz help
UnkleRhaukus
  • UnkleRhaukus
|dw:1437722943757:dw|
anonymous
  • anonymous
yes
UnkleRhaukus
  • UnkleRhaukus
|dw:1437723016130:dw|
anonymous
  • anonymous
correct
UnkleRhaukus
  • UnkleRhaukus
|dw:1437723141054:dw|
anonymous
  • anonymous
yes it is
UnkleRhaukus
  • UnkleRhaukus
so what is the dependent variable ?
anonymous
  • anonymous
the y axis
UnkleRhaukus
  • UnkleRhaukus
which variable does this correspond to (for the dragonfly)
anonymous
  • anonymous
what do u mean
anonymous
  • anonymous
?????
UnkleRhaukus
  • UnkleRhaukus
which variable (distance or time)
anonymous
  • anonymous
distance
UnkleRhaukus
  • UnkleRhaukus
yes the 'distance' the dragonfly can fly is the dependent variable, [this distance depends on how how much time the dragon fly has]
anonymous
  • anonymous
so is the answer either a or c
anonymous
  • anonymous
nvm its A, right
UnkleRhaukus
  • UnkleRhaukus
the slope intercept form of a straight line through the origin, is y = mx + b when the slope of the line is m and the y-intercept is b.
anonymous
  • anonymous
y=25x right??
UnkleRhaukus
  • UnkleRhaukus
we see that the line passes through the origin, so we know that b=0. but what is the slope m?
anonymous
  • anonymous
is it a
UnkleRhaukus
  • UnkleRhaukus
if we find the slope between (0,0) and (2,50) m = (50-0)/(2-0) = 50/2 = 25 so yes the slope m is 25
anonymous
  • anonymous
yaaaay thx
anonymous
  • anonymous
is it a
anonymous
  • anonymous
????
anonymous
  • anonymous
y=25x
UnkleRhaukus
  • UnkleRhaukus
you have y(x) = 25x or equivalently distance(time[hours])[miles] = 25[miles/hours] * t[hours]
anonymous
  • anonymous
is the correct answer a
UnkleRhaukus
  • UnkleRhaukus
what do you get when time[hours] = 24[hours] d(24[hr])[mi] = 25[mi/hr] * 24[hr]
anonymous
  • anonymous
??????????
anonymous
  • anonymous
just tell me if it is A
UnkleRhaukus
  • UnkleRhaukus
multiply 25 [miles/hour], by 24[hours]
anonymous
  • anonymous
600
anonymous
  • anonymous
so a is correct
UnkleRhaukus
  • UnkleRhaukus
[units?]
anonymous
  • anonymous
i did 25 x 24
UsukiDoll
  • UsukiDoll
units matter too ....
UsukiDoll
  • UsukiDoll
25 m/h x 24 h
anonymous
  • anonymous
so what do i do
UsukiDoll
  • UsukiDoll
a unit can be canceled out
UsukiDoll
  • UsukiDoll
|dw:1437724317100:dw|
anonymous
  • anonymous
so A is not right????
UnkleRhaukus
  • UnkleRhaukus
\[25 [\text{mi}/\text{hr}] \times 24[\text{hr}] =(25\times24)\frac{[\text{mi}][\text{hr}]}{[\text{hr}]} \\ =(25\times24)\frac{[\text{mi}]\cancel{[\text{hr}]}}{\cancel{[\text{hr}]}} \]
UsukiDoll
  • UsukiDoll
Thank you @UnkleRhaukus
anonymous
  • anonymous
600m
UsukiDoll
  • UsukiDoll
there we go.
anonymous
  • anonymous
ohhhh
anonymous
  • anonymous
so a is right
UsukiDoll
  • UsukiDoll
bunch of physics problems have numbers and units. so we need to keep the units while we're computing... otherwise the grader will be like 600 what ? 600 miles
UnkleRhaukus
  • UnkleRhaukus
meters is [m], miles is [mi] .
anonymous
  • anonymous
k thx
UnkleRhaukus
  • UnkleRhaukus
|dw:1437724740526:dw|

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