sat suite question viewer
For the linear function , the table shows three values of and their corresponding values of . Which equation defines ?
Explanation
Choice A is correct. An equation that defines a linear function can be written in the form , where and are constants. It's given in the table that when , . Substituting for and for in the equation yields , or . Substituting for in the equation yields . It's also given in the table that when , . Substituting for and for in the equation yields , or . Subtracting from both sides of this equation yields . Substituting for in the equation yields .
Choice B is incorrect and may result from conceptual or calculation errors.
Choice C is incorrect and may result from conceptual or calculation errors.
Choice D is incorrect and may result from conceptual or calculation errors.