Question 435221
 The line y=2.25x+1.79 represents an estimate of the average cost of gasoline each year. The line 0.11x-y=-0.85 estimates the price of gasoline in January of each year. 
Use the equations of the lines to determine if they are parallel, perpendicular or intersecting. Justify your answer.
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Put both equations into slope-intercept form.
y = 2.25x + 1.79
y = 0.22x + 0.85
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The slopes are different so the lines intersect.
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Cheers,
Stan H.
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