sat suite question viewer
In the xy-plane, the graph of the linear function contains the points and . Which equation defines , where ?
Explanation
Choice C is correct. In the xy-plane, the graph of a linear function can be written in the form , where represents the slope and represents the y-intercept of the graph of . It’s given that the graph of the linear function , where , in the xy-plane contains the point . Thus, . The slope of the graph of a line containing any two points and can be found using the slope formula, . Since it’s given that the graph of the linear function contains the points and , it follows that the slope of the graph of the line containing these points is , or . Substituting for and for in yields .
Choice A is incorrect. This function represents a graph with a slope of and a y-intercept of .
Choice B is incorrect. This function represents a graph with a slope of and a y-intercept of .
Choice D is incorrect. This function represents a graph with a slope of and a y-intercept of .