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The y intercept occurs when x=0.
At x=0, then
Plot (0,2) on the graph
Now starting at (0,2) use the slope to find another point.
Slope is rise (change in y) over run (change in x).
Starting at (0,2) with a slope of (7/5) would give you,
y:Starting y + Change in y=2+7=9
x:Starting x + Change in x=0+5=5
Plot (5,9) on the graph.
Then draw the line joining the two points.
To complete the graph, extend the line in both directions, from the points.