What is the equation of the line first written in point slope form and then written in slope intercept form? show how you did it

We have the points (3, 21) and (6, 12).

The slope-intercept form: y = mx + b.

The point-slope form:

Substitute:

point-slope form: y - 21 = -3(x - 3)slope-intercept form: y = -3x + 30

You have 2 sides that are 2 cms and you have 6 sides that are 1/2 cm and you have 4 sides that are 1 cm. the smallest sides are 1/2 the medium sized sides are 1 and the smallest are 1/2. so to find the perimeter you have to add them all up together so your answer will be 11 cm's