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Linear functions SAT question
Math · Algebra · Medium · Answer it here, explanation included.
In the xy-plane, the points 
and 
lie on the graph of which of the following linear functions?
ExplanationShow
Choice C is correct. A linear function can be written in the form 
, where m is the slope and b is the y-coordinate of the y-intercept of the line. The slope of the graph can be found using the formula 
. Substituting the values of the given points into this formula yields 
or 
, which simplifies to 
. Only choice C shows an equation with this slope.
Choices A, B, and D are incorrect and may result from computation errors or misinterpreting the given information.
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