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7. Consider the line 𝑥 + 4𝑦 = −4. To graph this line, you could:
!• determine the x- and y-intercepts!
• create a table of values!
• use the equation to find the coordinates of three points on !the line!
Which method of graphing do you prefer in this case? Explain.
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8. A candle burns at a constant rate of 2.5 cm/h. The candle is 15 cm tall when it is first lit.
a) Set up a graph of length, l, in centimeters, versus time, t, in hours, and plot the l-intercept.
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<;%Should the slope of this linear relation be positive or negative? Explain.
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##*%When you buy a computer, its value depreciates (becomes less) over time. The graph illustrates the
value of a computer from the time it was bought.
a) How much did the computer originally cost?
b) After what period of time does the computer no longer have value?
c) What is the slope and what does it mean?%
