GMAT Math : DSQ: Graphing a line
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Example Question #681 : Data Sufficiency Questions
Graph a line, if possible.
Statement 1: The slope is 4.
Statement 2: The y-intercept is 4.
Statement 1): The slope is 4.
Write the slope-intercept form, and substitute the slope.
The point and the y-intercept are unknown. Either of these will be needed to solve for the graph of this line.
Statement 1) by itself is not sufficient to graph a line.
Statement 2): The y-intercept is 4.
Substitute the y-intercept into the incomplete formula.
The function 
Therefore:
Example Question #1 : Dsq: Graphing A Line
Find the graph of 
I) 
II) 
Either statement is sufficient to answer the question.
Both statements are needed to answer the question.
Statement II is sufficient to answer the question, but Statement I is not sufficient to answer the question.
Statement I is sufficient to answer the question, but Statement II is not sufficient to answer the question.
Neither statement is sufficient to answer the question. More information is needed.
Both statements are needed to answer the question.
Find the graph of 
I) 
II) 
To graph a linear equation, we need some combination of slope, y-intercept, or two points.
Statement I tells us 
Statement II gives us the y-intercept of 
We can use Statement I and Statement II to find the slope of 
Slope:
Plugging in the provided value of 
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