what's the answer???

Question

write an equation of the line described

passes through (3,9)

parallel to the line y=-x-1

Answer 1

The answer is y = -x + 12

An equation of a line that is parallel to y = -x - 1 will have the

same slope of -1 (y = (-1)x - 1.

using the equation y-y1=m(x-x1) where m is the slope and y1 and

x1 are represented by the coordinates given the line needs to pass

through (3,9) (x1,y1)

y - 9 = -1(x - 3) - distributive property

y - 9 = -x + 3 - add 9 on both sides

y = -x + 12

you end up with y = -x + 12.

If you graph this equation you will see that

it passes through the point (3,9).

Hope this helps!