For each situation, graph the function and describe the key characteristics.

A, x+4y=20

1) Write the function equation in slope-intercept form.
2) Determine the slope of the function equation.
3) Is the constant rate of change increasing of decreasing?
4) How do you know?
5) Describe the stair of the slope.
6) Determine the y-intercept of the function equation.
7) What are the coordinated of the y-intercept?
8) Calculate the zero of the function. Show your work.
9) What are the coordinates of the x-intercept?
10) Graph the function equation on the coordinate plane below. Include the following parts with your graph:
a. Plot at least three points, including the y-intercept.
b. Connect at least two points with the stair of the slope.
c. Draw a straight line through the points using a straightedge.