Diego runs 7 miles in 63 minutes. Use the table below to determine how long it would take Diego to run 4 miles at this rate.
2 answers:
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the equations are already in slope-intercept form, therefore
so their slopes are 2 and 4.
parallel lines have exactly the same slope, these ones do not, so they're not parallel.
perpendicular lines, have negative reciprocal slopes, in short, their product gives -1, 2*4 ≠ -1, so they're not perpendicular either.