EasyPhysics1Units and Measurements, Mathematical Tools
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Which of the following may represent the curve x = 2y − 3
A

B

C
D
Explanation
Rewrite the equation in slope–intercept form with y as the subject. x = 2y − 3 ⇒ 2y = x + 3 ⇒ y = (1/2)x + 3/2. This represents a straight line with positive slope 1/2 and y-intercept 3/2. So the graph must slope upward from left to right and cut the y-axis above the origin, which corresponds to graph (a).
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