Cody can choose to work any number of hours on each job as long as those hours allow him to earn $693 or more.

`(7 $/(hr))(x (hr))+(9 $/(hr))(y (hr))>=$693`

or

`7x+9y>=693` (1)

Find the x and y intercepts of `7x+9y=693` in order to draw the graph.

If x=0: `y=693/9=77`

If y=0: `x=693/7=99`

Draw a line from point (0,77) to (99,0). Any combination of x and y falling in the shaded area (to infinity) would satisfy the inequality (1). Note that x and y are positive, as no negative hours can be worked.

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