Equation of a straight line

Which graph best represents the equation:

 $2x+y=5$  ?

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Answer explanation

To graph a line, start with the y-intercept and then use the slope to create the line.

Here the y-intercept is (0, 4). And the slope is -2/3, which takes us down 2 then right 3 (or up 2 then left 3). We can check to see if we used slope correctly depending on how the line reads. Since the slope is negative, our line should be decreasing.

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Which could be the graph of the equation y = 1/3x - 2?

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Answer explanation

You want a y-intercept of -1

Positive slope of 4

Move: up 4 and right 1 or down -4 and left -1

Sketch y = 2x + 1

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Which graph shows the correct line for the table?

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