Answer:
(c) See attached
Step-by-step explanation:
You want the graph of the equations ...
Y-intercept
The constant in each equation is the y-intercept, the point on the y-axis where the line crosses. That means the two lines cross the y-axis at +12 and +4. This is the case only in graph C, attached.
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Additional comment
The coefficient of x is the slope of the line. A slope of 1/3 means the line goes 3 units to the right for each 1 unit up. The line with that "shallow" slope is the one that crosses the y-axis at +12.
The second line has a slope of 3, so rises 3 units for each 1 unit to the right. That line crosses the y-axis at +4.
The intersection point of the two lines is necessarily in the first quadrant.
