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Aloiza [94]
3 years ago
12

apparently this is explains to find the linear function by the table ( given) but in slope intercept form ( please help me :') )

Mathematics
2 answers:
nika2105 [10]3 years ago
6 0

Answer:

y=4x+3.....hope this helps ; )

Step-by-step explanation:

mixer [17]3 years ago
5 0

Answer:

y = 4x +b

Step-by-step explanation:

The question asks you to write in slop intercept form which is y = mx+b so first you ahve to solve for the slope (m) and the formula for that is m = y2-y1/x2-x1

and bascially you plug in any points that are on the table and use the y's and x's

so im going to use the first two points

m =  (11-7) / (2-1)

   = 4 / 1

   = 4

so the slope equals four and we can plug that into our slope intercept equation

y = 4x + b and now we need to slove for b the y intercept and we can do that by plugging in any points from the table into our equation (to understand why this works probaly ask you teacher for a in-depth explination)

im going to use the first points again and plug it into our equation

7 = 4(1) + b (mutiply 1 by four)  

7 = 4 +b (isolate b so subtract four from each side)

-4   -4

3 = b so we now know the slope and the y intercept so our equation in slope intercept form will be y = 4x +3

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How to convert sine to cosine.? if i have the following equation: y = sin (300t and i want to represent this as a cos?
IgorC [24]
If you were to graph the sine and cosine functions on the same set of axes, you'd see that they are 90 degrees, or pi/2 radians, out of sync with one another.  cos 0 is 1, whereas sin 0 is 0; sin x does not reach the value 1 until your angle reaches 90 degrees, or pi/2 radians.

Please do some experimentation here.  You want to express sin (300t) as a cosine, that is, as cos (300t + [some angle]), where [some angle] is called a "phase shift."

Start with the basic y=sin x.  Its graph is usually begun at (0,0).  Try simplifying and graphing cos (x-pi/2).  Does this produce the same y=sin x, with the same graph?  Do you remember that 
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It happens that cos pi/2 = 0 and that sin pi/2 = 1.  Thus,
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Now, what about obtaining sin 300t from the cosine function?

First:  recognize that the standard form of the cosine function with a phase shift is     y = a cos (bx + c).  What is the period?

Answer:  The period is always 2pi/b.  So, in the case, the period is 2pi/300, or pi/150.

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Try this:  Simplify cos (300t -pi/150)  If the end result is sin 300t, you'll know you have this right.  If the end result is not sin 300t, experiment with that phase shift.
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Step-by-step explanation:

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