The equation −x−2y=0 is graphed in the xy-plane. Which of the following is a true statement about the graph?Choose 1 answer:(A) The graph goes through the point (−1,2).(B) The graph has a slope of 2.(C) The graph goes through the point (0,0).(D) The graph has a slope of 21.
Q. The equation −x−2y=0 is graphed in the xy-plane. Which of the following is a true statement about the graph?Choose 1 answer:(A) The graph goes through the point (−1,2).(B) The graph has a slope of 2.(C) The graph goes through the point (0,0).(D) The graph has a slope of 21.
Rewrite Equation: Rewrite the equation in slope-intercept form to find the slope and y-intercept.The equation given is −x−2y=0. To rewrite it in slope-intercept form (y=mx+b), we need to solve for y.Add x to both sides to get −2y=x.Now divide both sides by −2 to isolate y: y=(−21)x.
Analyze Slope-Intercept Form: Analyze the slope-intercept form to determine the slope and y-intercept.From the equation y=(−21)x, we can see that the slope (m) is −21 and the y-intercept (b) is 0, which means the graph goes through the origin (0,0).
Check Given Points: Check the given points and slopes against the slope-intercept form.(A) The graph goes through the point (−1,2). To check this, substitute x=−1 and y=2 into the equation y=(−1/2)x. We get 2=(−1/2)(−1)=1/2, which is not true. So, option (A) is incorrect.(B) The graph has a slope of 2. This is not true because we found the slope to be −1/2. So, option (B) is incorrect.(C) The graph goes through the point (0,0). This is true because the y-intercept is 0, which means the graph goes through the origin. So, option (C) is correct.(D) The graph has a slope of (1)/(2). This is not true because we found the slope to be −1/2, not x=−11. So, option (D) is incorrect.
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