sat suite question viewer
The function is defined as more than times a number . If is graphed in the -plane, what is the best interpretation of the -intercept?
Explanation
Choice A is correct. Itβs given that the function is defined as more than times a number . This can be represented by the equation . The x-intercept of the graph of in the xy-plane is the point where the graph intersects the x-axis, or the point on the graph where the value of is equal to . Substituting for in the equation yields . Subtracting from each side of this equation yields . Dividing each side of this equation by yields . Therefore, when , the number is .
Choice B is incorrect. This is the best interpretation of the y-intercept, not the x-intercept, of the graph of the function.
Choice C is incorrect and may result from conceptual or calculation errors.
Choice D is incorrect. This is the best interpretation of the slope, not the x-intercept, of the graph of the function.