Answer:
<h2>y = -2x - 10</h2>
Step-by-step explanation:
The formula of a slope:

We have two points (-5, 0) and (-1, -8). Substitute:

The slope-intercept form of an equation of a line:

m - slope
b - y-intercpet
Put the value of the slope and coordinates of the point (-5, 0) to the equation of a line:

<em>subtract 10 from both sides</em>

Finally:

Answer:
C =3.33x
Step-by-step explanation:
The cost of 1 barrette is
9.99/3 sine it is 9.99 for 3 barrettes
or 3.33 per barrette
We want x barrettes
or 3.33*x
C is the total cost
C =3.33x