The table shows ordered pairs of the function y=8-2x. what is the value of y when x=8

answer:   the answer is:   " - 8 " .

              →   "   y =   - 8 " .

step-by-step explanation:

given:   y = 8 - 2x   ;

find the value of "y" ;   when "x = 8" ;

we plug in "8" for "x" in the given equation;

    to solve for "y" ; our answer:

  →   y = 8 - 2(8) ;

  →   y = 8 - 16 ;

  →   y =   - 8 ;   which is our answer.

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second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.