howellkylee807 howellkylee807
  • 07-02-2020
  • Mathematics
contestada

complete the equation of the line through (-8, 8) and (1, -10)

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kudzordzifrancis
kudzordzifrancis kudzordzifrancis
  • 13-02-2020

Answer:

[tex]y=-2x-8[/tex]

Step-by-step explanation:

Let [tex]y=mx+c[/tex] be the equation of this line.

The points must satisfy this equation.

When x=-8, and y=8, we get:

[tex]8=-8m+c....(1)[/tex]

When x=1, and y=-10, we get:

[tex]-10=m+c...(2)[/tex]

Subtract equation (1) from equation (2) to get:

[tex]m--8m=-10-8[/tex]

9m=-18

m=-2

We put m=-2 in equation to get (2)

-10=-2+c

c=-10+2

c=-8

Therefore the equation is:

y=-2x-8

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