sat suite question viewer
Algebra
/ Linear equations in two variables
Difficulty: Medium
When line is graphed in the xy-plane, it has an x-intercept of and a y-intercept of . What is the slope of line ?
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Explanation
Choice C is correct. It's given that when line is graphed in the xy-plane, it has an x-intercept of and a y-intercept of . The slope, , of a line can be found using any two points on the line, and , and the slope formula . Substituting the points and for and , respectively, in the slope formula yields , or . Therefore, the slope of line is .
Choice A is incorrect and may result from conceptual or calculation errors.
Choice B is incorrect. This is the slope of a line that has an x-intercept of and a y-intercept of .
Choice D is incorrect and may result from conceptual or calculation errors.