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Which of the following equations represents a line that passes through the points 
(-10,9) and 
(5,0) ?
I. 
3x+5y=10
II. 
y=-(3)/(5)x+3
Neither
I only
II only
I and II

Which of the following equations represents a line that passes through the points (10,9) (-10,9) and (5,0) (5,0) ?\newlineI. 3x+5y=10 3 x+5 y=10 \newlineII. y=35x+3 y=-\frac{3}{5} x+3 \newlineNeither\newlineI only\newlineII only\newlineI and II

Full solution

Q. Which of the following equations represents a line that passes through the points (10,9) (-10,9) and (5,0) (5,0) ?\newlineI. 3x+5y=10 3 x+5 y=10 \newlineII. y=35x+3 y=-\frac{3}{5} x+3 \newlineNeither\newlineI only\newlineII only\newlineI and II
  1. Calculate slope: Calculate the slope of the line using the given points (10,9)(-10,9) and (5,0)(5,0).Slope(m)=y2y1x2x1=095(10)=915=35Slope (m) = \frac{y_2 - y_1}{x_2 - x_1} = \frac{0 - 9}{5 - (-10)} = \frac{-9}{15} = -\frac{3}{5}.
  2. Find y-intercept: Use one of the points to find the y-intercept bb of the line. Let's use the point (5,0)(5,0). We have the slope m=35m = -\frac{3}{5} and the point (x,y)=(5,0)(x, y) = (5, 0). Using the point-slope form yy1=m(xx1)y - y_1 = m(x - x_1), we get: 09=(35)(5(10))0 - 9 = (-\frac{3}{5})(5 - (-10)). Simplifying, we get: 9=(35)(15)-9 = (-\frac{3}{5})(15). 9=9-9 = -9. This confirms that the slope is correct. Now, we need to find the y-intercept.
  3. Slope-intercept form: To find the yy-intercept, we can use the slope-intercept form y=mx+by = mx + b, where mm is the slope and bb is the yy-intercept.\newlineUsing the point (5,0)(5,0) again, we substitute m=35m = -\frac{3}{5} and x=5x = 5 into the equation to solve for bb:\newline0=(35)(5)+b0 = (-\frac{3}{5})(5) + b.\newliney=mx+by = mx + b00.\newliney=mx+by = mx + b11.
  4. Check equation I: Write the equation of the line in slope-intercept form using the slope m=35m = -\frac{3}{5} and the y-intercept b=3b = 3.\newlineThe equation is y=(35)x+3y = (-\frac{3}{5})x + 3.
  5. Check equation II: Check if the equation I 3x+5y=103x + 5y = 10 represents the line that passes through the points (10,9) (-10,9) and (5,0) (5,0) . Substitute the point (10,9) (-10,9) into the equation: 3(10)+5(9)=30+45=153(-10) + 5(9) = -30 + 45 = 15, which is not equal to 1010. Therefore, equation I does not represent the line that passes through the given points.
  6. Determine correct answer: Check if the equation II y=35x+3y = -\frac{3}{5}x + 3 represents the line that passes through the points (10,9(-10,9) and (5,0)(5,0). We have already derived this equation in Step 44, so it does represent the line that passes through the given points.
  7. Determine correct answer: Check if the equation II y=35x+3y = -\frac{3}{5}x + 3 represents the line that passes through the points (10,9(-10,9) and (5,0)(5,0). We have already derived this equation in Step 44, so it does represent the line that passes through the given points.Determine the correct answer based on the checks performed in Steps 55 and 66. Since equation I does not represent the line and equation II does, the correct answer is "II only".

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