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MA_775_DIABLO [31]
3 years ago
6

9. Fill in the blank. -8 +_= -15

Mathematics
1 answer:
77julia77 [94]3 years ago
6 0

Step-by-step explanation:

9. -8+(-7)=-15

10. 12+(-42)=-30

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(-3,y), (-9,-2); m=1
12345 [234]

Answer:

The value of y is 4

The equation of line is y = x + 7   .

Step-by-step explanation:

Given as :

The points are

(x_1, y_1) = (- 3, y)

(x_2, y_2) = (- 9, -2)

The slope = m = 1

Now,<u> The slope is calculated in points form</u>

So, Slope = \dfrac{y_2-y_1}{x_2-x_1}

I.e m = \dfrac{y_2-y_1}{x_2-x_1}

or, 1 = \dfrac{- 2 - y}{- 9- (-3)}

or, 1 = \dfrac{- 2 - y}{- 6}

or, 1 × (-6) = - 2 - y

or, - 6 = - 2- y

or, y = - 2 + 6

∴ y = 4

So, The new points as

(x_1, y_1) = (- 3, 4 )

(x_2, y_2) = (- 9, -2)

<u>So, the equation of line in slope - point form can be written as</u>

y - y_1 = m ( x - x_1 )

i.e y - 4 = ( 1 ) × ( x - (-3) )

or, y - 4 = x + 3

∴ y = x + 3 + 4

Or, y = x + 7

So, The equation of line is y = x + 7

Hence The value of y is 4

And The equation of line is y = x + 7   . Answer

8 0
3 years ago
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