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enyata [817]
3 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]3 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]3 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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