3. Use substitution to solve the system of equations.
y+1 = - 2x
4y + 8x = -4
Is there a solution

infinite solutions

Step-by-step explanation:

the lines are coincident, so there are infinite solutions

the smallest possible measurement of the width is 14 feet

step-by-step explanation:

let's assume length of parallelogram is 'l'

width of parallelogram is 'w'

the perimeter of a parallelogram must be no less than 40 feet

so, we get

we are given

length of parallelogram is 6 feet

so,

l=6

we can plug it

now, we can solve for w

subtract both sides by 12

divide both sides by 2

and we get

so,

the smallest possible measurement of the width is 14 feet