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Elza [17]
2 years ago
8

Write an equation for the line that passes through (−8.5,11) and (5,−2.5)

Mathematics
2 answers:
enot [183]2 years ago
5 0

y = -x + 2.5

slope formula:

\sf \dfrac{y_2-y_1}{x_2-x_1}

find slope:

\rightarrow \sf \dfrac{-2.5-11}{5-(-8.5)}

\rightarrow \sf \dfrac{-13.5}{13.5}

\rightarrow \sf -1

equation formula:

\sf y_1-y = m(x_1-x)

find equation:

\hookrightarrow \sf y-11=-1(x-(-8.5)

\hookrightarrow \sf y-11=-x-8.5

\hookrightarrow \sf y=-x-8.5+11

\hookrightarrow \sf y=-x+2.5

Mkey [24]2 years ago
5 0
  • (-8.5,11)
  • (5,-2.5)

Slope:-

  • m=-2.5-11/5+8.5
  • m=-13.5/13.5
  • m=-1

Equation in point slope form

  • y-11=-1(x+8.5)
  • y-11=-x-8.5
  • y=-x+2.5
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evablogger [386]

Solve for w: by simplifying both sides of the equation, then isolating the variable.

w=-217

Work: 1.  Subtract 13 from both sides (w/7 = -18 - 13), 2.Simplify -18-13 to -31 (w/​7=-31), 3.Multiply both sides by 7 (w = -31 * 7), 4. Simplify 31*7 to 217 (w=-217)

8 0
3 years ago
A: x/8=3/4<br> B: 2/5=x/40<br> C: 1/8=x/40<br> D:x/10=12/15
Aloiza [94]
I’m assuming you want to figure out what x is in the equation so....

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4 0
3 years ago
How to find the original price of a discounted item?
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7 0
3 years ago
(-1/4) ÷ 2/3 × (-1/2)​
amid [387]

Answer:

1/48

Step-by-step explanation:

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4 0
3 years ago
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FinnZ [79.3K]

Answer:

the value of the variable x is 16

Step-by-step explanation:

given \: expression \\  \frac{5}{8}x =  \frac{1}{2} x + 2 \\ substract \: \frac{1}{2} x from \: both \: sides \\ \frac{5}{8}x  - \frac{1}{2} x = \frac{1}{2} x  - \frac{1}{2} x  + 2 - \frac{1}{2} x  \\ factor \: out \: common \: x \\ x( \frac{5}{8}  -  \frac{1}{2} ) =  \frac{1}{8}  \\ simplify \\ \frac{1}{2} x  + 2 - \frac{1}{2} x \:  \frac{1}{2} x -  \frac{1}{2} x = 0 = 2 \\  \frac{1}{8} x = 2 \\ multiply \: both \: sides \: by \: 8 \\ 8. \frac{1}{8} x = 2.8 \\ simplify \\ x = 16.

6 0
1 year ago
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