The equation 4a + b - 3 = 2b is a linear equation because it can be rearranged into the standard linear form without any variable raised to a power higher than one. ;
The equation 4 a + b − 3 = 2 b is a linear equation because it can be rearranged to b = 4 a − 3 , which follows the standard linear form. It consists only of first powers of the variables involved, confirming its linearity. Hence, it represents a straight line when graphed.
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