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enyata [817]
2 years ago
10

Write an equation in point-slope form of the line that passes through (3, -8) and (7,-2).

Mathematics
2 answers:
sashaice [31]2 years ago
3 0

Answer:

A line that passes through (3, -8) and (7,-2).

Denote equation of that line: y = ax + b

=> Slope a can be directly determined by:

a = (7 - 3)/(-2 - -8) = 4/6 = 2/3

=> y = (2/3)x + b

This line passes (3, -8), then: -8 = (2/3)*3 + b => -8 = 2 + b => b = -10

=> y =(2/3)x - 10

There are other ways to find equation of line.

Hope this helps!

:)

barxatty [35]2 years ago
3 0

Answer:

\frac{3}{2} x+10

Step-by-step explanation:

\frac{y1 - y2}{x1 - x2}  \\  \frac{ - 8 - ( - 2)}{3 - 7}  \\  \frac{ - 8 + 2}{ - 4}  \\  \frac{ - 6}{ - 4}  \\  =  \frac{3}{2}

y=3/2x+c

-8-3/2=c

c=10

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Step-by-step explanation:

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2<br> 2. Evaluate (a + y)+ 2y if a = 5 and y = -3.<br> F 58<br> G -2<br> H 70<br> J 10
NARA [144]
<h3>Answer:  G) -2</h3>

=======================================================

Explanation:

I'm assuming you meant to say (a+y)^2 + 2y

Replace each copy of 'a' with 5. Replace each copy of 'y' with -3. Use PEMDAS to simplify.

(a+y)^2 + 2y

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So (a+y)^2 + 2y = -2 when a = 5 and y = -3.

3 0
3 years ago
4(4-w)=3(2w+2)<br>find w​
Travka [436]

Answer:

1

Step-by-step explanation:

4(4-w) = 3(2w+2)

Use distributive property:

16 - 4w = 6w + 6

    +4w  +4w

------------------------

     16 = 10w + 6

    -6              -6

-------------------------

        10 = 10w

        ----    -----

        10      10

         1 = w

Hope this helped.

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3 years ago
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10=12-x what would match this equation
Eddi Din [679]

Answer:

x=2

Step-by-step explanation:

12-10=2

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