Which of the following equations represents a line that passes through the points (−4,5) and (6,0) ?I. 3x+6y=12II. y=−21x+4NeitherI onlyII onlyI and II
Q. Which of the following equations represents a line that passes through the points (−4,5) and (6,0) ?I. 3x+6y=12II. y=−21x+4NeitherI onlyII onlyI and II
Find Slope: Find the slope of the line using the given points (−4,5) and (6,0). Slope, m=x2−x1y2−y1=6−(−4)0−5=10−5=−21.
Find Y-Intercept: Use one of the points to find the y-interceptb of the line. Let's use the point (6,0). We have m=−21 and the point (6,0). Substitute x=6, y=0, and m=−21 in y=mx+b. 0=(−21)(6)+b0=−3+b(6,0)0
Write Equation: Write the equation of the line in slope-intercept form using the slope m=−21 and y-intercept b=3.y=mx+by=(−21)x+3
Check Equation I: Check if equation I 3x+6y=12 represents the line that passes through the points (−4,5) and (6,0). To do this, we can convert the equation to slope-intercept form by solving for y. 3x+6y=12 \(\newline6y = -3x + 12\) \(\newliney = (-3x + 12) / 6\) \(\newliney = (-1/2)x + 2\) This equation has the same slope as the one we found, but a different y-intercept. Therefore, equation I does not represent the line that passes through the given points.
Check Equation II: Check if equation II y=−21x+4 represents the line that passes through the points (−4,5) and (6,0). The slope of equation II is −21, which matches the slope we found. However, the y-intercept is 4, which does not match the y-intercept we found (3). Therefore, equation II also does not represent the line that passes through the given points.
Final Answer: Since neither equation I nor equation II has both the correct slope and y-intercept that match the line passing through the points (−4,5) and (6,0), the correct answer is "Neither."
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