Homework Help: Math 116

Posted by Carmen on Wednesday, October 15, 2008 at 10:36pm.

could someone please help me with this question. I have no clue where to start...

the line: y = 0.15x + 0.79 represents an estimate of the average cost of gasoline for each year.

the line: 0.11x - y = -0.85 estimates the price of gasoline in January each year.

a) do you expect the lines to be intersecting, paralle, or perpendicular? Explain

b) use the equations of the lines to determine if they are parallel. what did you find?

Math 116 - bobpursley, Thursday, October 16, 2008 at 6:43am
Parallel lines have the same slope, these do not. Perpendicular lines have slopes that are the negative reciprocals, these do not.

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