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4 years ago

How do I write an equation in point slope form

2 answers:

7 0

The formula is
y-y1 = m(x-x1)
First, find the slope using the points (- 2, 3) and (3, - 1) : m = 3-(-1)/-2-3 = 4/-5 = -4/5
Next, pick a point -- for example, (- 2, 3) . Using this point, x1 = - 2 and y1 = 3 .
Therefore, the equation of this line is y - 3 = -4/5 (x - (- 2)) , which is equivalent to y - 3 = - 4/5(x + 2) .

valentina_108 [34]4 years ago

5 0

Hi there...
the point slope formula is
y-y1=m(x-x1)

where y and x represent any points
y1 and x1 represents known points
and m represents the slope

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What are the coordinates of the points indicated on the graph?

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Answer:

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2 years ago

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Darya [45]

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Now you can compare the two ratios:
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3 years ago

Which statement explains the relationship of sides BA and B'A' after rectangle BADC has been rotated 90° clockwise about the ori

Leni [432]

Answer:

Numbering the options, we have;

1) Side B'A' has a slope of −1 and is perpendicular to side BA.

2) Side B'A' has a slope of 1 and is parallel to side BA.

3) Side B'A' has a slope of 1 and is perpendicular to side BA.

4) Side B'A' has a slope of −1 and is parallel to side BA.

The correct option is;

1) Side B'A' has a slope of -1 and is perpendicular to side BA

Step-by-step explanation:

The given coordinates are;

A(3, 5) B(1, 3), C(5, -1) and D(7, 1)

The slope of BA is found as follows;

$Slope \, of BA= \dfrac{y_{2}-y_{1}}{x_{2}-x_{1}} =\dfrac{3-5}{1-3}= \dfrac{-2}{-2} = 1$

Rotation of a line through 90 degrees gives

(x, y) will be (y, -x)

Therefore, the coordinates of A' = (5, -3)

The coordinates of B' = (3, -1)

Then the slope is given as follows;

$Slope \, of \, B'A' =\dfrac{-1 -(-3)}{3-5}= \dfrac{2}{-2} = -1$

Therefore side B'A' has a slope of -1 and is perpendicular to side BA.

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4 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago