What is an equation for the linear function whose graph contains the points (9, 7) and (4, −8) ?

1 answer:

5 0

Y=mx+b where m=slope which is change in y divided by change in x m=(-8-7)/(4-9)=-15/-5=3 so we have y=3x+b now we can use either point, I'll use (9,7), to solve for b or the y-intercept... 7=3(9)+b 7=27+b b=-20so our line is: y=3x-20

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James packs books into boxes. He packs 20 books into each box. James packs x boxes of books. write an expression, in terms of x,

Paraphin [41]

There are 20 books in each box.
If each box has 20 books, then the number of books is 20 times the number of boxes. (20 books: 1 box, 40 books: 2 boxes...)

So, using mathematical terms, the number of books is equal to the number of boxes x 20.

Here, it says James packs x boxes of books. This means that we call the number of boxes, x. X could be 1,2,3, or any other number.

So, since there are 20 times as many books as boxes, the number of books is 20 times x.

In math terms, this is written like 20x.
So the answer is 20x.

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lilavasa [31]

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I hope this helps

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2. In the circle shown, secants PE and PF have been drawn such that mCE  82 , mDF  98 and the ratio 3. In circle O, tangent

Andrew [12]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The arc PR is $\theta _{PR} = 84$