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Which statement does not describe a linear relationship?
A All linear equations are straight lines.
B All linear equations must cross the x-axis.
C If the slopes of two lines are the same, the lines go in the same direction.
D If the y-intercepts of two lines are the same, the lines cross the y-axis at the same point.
-note that when it is linear the graph is a line. that makes choice A true -two lines with the same slope are called parallel lines. they won't meet at any point (theoretically) and does have the same direction. that makes choice C true -if two lines are having the same y-intercept, they would intersect at that same point in the y-axis. this makes choice D true -note that a line could have an equation say y=3 which makes the value of y always equal to 3 and the value of x in infinity and doesn't intersect the x-axis. this line is parallel with the x-axis and won't have an x-intercept (theoretically) therefore the answer is B
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