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Harman [31]
3 years ago
9

What is the slope-intercept form of the function described by this table?

Mathematics
1 answer:
Pavel [41]3 years ago
7 0

Answer:

y = -4x +2

Step-by-step explanation:

As x-values increase by 1, y-values decrease by 4. The slope of the line is ...

... m = (change in y)/(change in x) = -4/1 = -4

We can use the first (x, y) pair as a point to use in the point-slope form of the equation of a line. That form can be written, for slope m and point (h, k) ...

... y = m(x -h) +k

using m = -4 and (h, k) = (1, -2), we can fill in the numbers to get ...

... y = -4(x -1) -2

... y = -4x +4 -2 . . . . eliminate parentheses

... y = -4x +2 . . . . . . slope-intercept form

_____

<em>Alternate approach</em>

After you recognize that a change in x of 1 gives a change in y of -4, you can work backward one step to find the table value for y corresponding to x=0. That will be -2+4 = +2. Now, you know both the slope (-4) and the y-intercept (+2), so you can write the equation directly from this knowledge:

... y = -4x +2

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Answer:

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Step-by-step explanation:

Given:

Points earned for every successful, half-court shots = 20

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According to the question:

Let the number of successful half-court shot be x

And the number of shots missed be 20-x

So,

In terms of points we can re-write it as:

⇒ 20(x)-5(20-x) =0

⇒ 20x-100+5x=0

⇒ 25x-100=0

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⇒ 25x=100

⇒ \frac{25x}{25} =\frac{100}{25}

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Tony make 'x' shots that is 4 and the number of shot he missed is (20-x) =(20-4)=16

6 0
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Answer:

$133.20

Step-by-step explanation:

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Step-by-step explanation:

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