Homework help?
There is a graph and the x axis is time in seconds and the y axis is distance…the problem is acting like someone is throwing a ball and it starts at 3 meters per second and continues to grow 2 meter/a second after that until it hits 7 seconds. Then after 7 seconds it stays the same speed until 12 seconds when it starts to decrease 3 meters a second and stops at 15.
then it asks to model the distance of the object from the detector by using 3 linear equations.
I get how to make the equations and i already found them out but what is the next step???
please help it’s worth a lot!
Favorite Answer
x = 1
y = 3
Cause, the ball travels 3m in in the first second, right…?
x = 2
y = 3 + (3 + 2) = 8
The ball’s speed for the 2nd second is 5 m/s.
x = 3
y = 3 + (3 + 2) + (3 + 2 + 2) = 15
x = 4
y = 3 + 5 + 7 + 9 = 24
x = 5
y = 24 + 11 = 35
x = 6
y = 35 + 13 = 48
x = 7
y = 48 + 15 = 63
By the 7th second, the ball’s speed is 15 m/s.
x = 8
y = 63 + 15 = 78
x = 9, 10, 11, 12
y = 93, 108, 123, 138
x = 13
y = 138 – 3 = 135
x = 14, 15
y = 132, 129
Then, you can connect all the dots… =)
You can compare the distance from the graph & from the equations. When you get the same answer, then you’re already there…
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