1. GEOMETRY Use the diagram shown. 80
L.
60
x+y=90
40
a. Write the equation in slope-intercept form.
20
of
20
40 60 80
b. Graph the equation.
c. Use the graph to find the value of y if x = 30.

Solve these problems: 1.what is the perimeter of an equilateral triangle with sides measuring 6cm? 2. a regular pentagon has sides measuring 3.2 cm. what is its perimeter? 3. a regular decagon has sides of 3.5mm . what is it’s perimeter? 4. a regular octagon has a perimeter of 64cm. what is the length of one of the sides? 5. a regular hexagon has a perimeter of 72mm . what is the length of one of the sides? 6. what is the perimeter of a rhombus with sides measuring 11m?