Answer
See graphs
Work Step by Step
As you can see in both graphs all lines pass through the origin (0,0)
a) The yellow line has a slope of 2 because for every 2 units it rises on the y-axis, it runs 1 unit on the x-axis.
The red line has a slope of 1 because for every 1 unit it rises on the y-axis, it runs 1 unit on the x-axis.
The blue line has a slope of 1/2 because for every 1/2 units it rises on the y-axis, it runs 1 unit on the x-axis.
The green line has a slope of 0 because it will never rise on the y-axis and will always run straight on the x-axis.
b) The yellow line has a slope of 3 because for every 3 units it rises on the y-axis, it runs 1 unit on the x-axis.
The green line has a slope of 1/2 because for every 1/2 units it rises on the y-axis, it runs 1 unit on the x-axis.
The red line has a slope of 1/3 because for every 1/3 units it rises on the y-axis, it runs 1 unit on the x-axis.
The yellow line has a slope of -1/3 because for every 1/3 units it falls on the y-axis, it runs 1 unit on the x-axis.
