You can
put this solution on YOUR website!Can you show me a graph for the slope of these lines?
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slope is change in y over change in x.
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(a) 1/2
Put your pencil on (0,0)
Since 2 in in the denominator move your pencil 2 to the right
then, since 1 is in the numerator, move your pencil one up:
put a dot at that point. Draw a line thru (0,0) (2,1)
That is a line with slope = 1/2:

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(b) -2= -2/1
Start at (0,0); move 1 to the right; move 2 down
Draw a line thru (0,0) (1,-2)

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(c) -1/2
Start at (0,0); move 2 to the right; move 1 down
Draw a line thru (0,0) (2,-1)

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(d) 2 = 2/1
Start at (0,0); move 1 to the right; move 2 up
Draw a line thru (0,0) (1,2)
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Cheers,
Stan H.