K kekepania New member Joined Dec 13, 2005 Messages 7 Mar 12, 2006 #1 I am having trouble fiuring this out, can you please help? A line passing through (2, 18) and (1, y) is parallel to a line with slope 12. What is the value of y?
I am having trouble fiuring this out, can you please help? A line passing through (2, 18) and (1, y) is parallel to a line with slope 12. What is the value of y?
G Gene Senior Member Joined Oct 8, 2003 Messages 1,904 Mar 12, 2006 #2 Write the equation of the line y-18=12(x-2) solve f(1) for y
M Mrspi Senior Member Joined Dec 17, 2005 Messages 2,127 Mar 13, 2006 #3 kekepania said: I am having trouble fiuring this out, can you please help? A line passing through (2, 18) and (1, y) is parallel to a line with slope 12. What is the value of y? Click to expand... If the desired line is to be parallel to a line with slope 12, then the slope of the desired line must also be 12 (parallel lines have equal slopes). To find the slope of the line through (x<SUB>1</SUB>, y<SUB>1</SUB>) and (x<SUB>2</SUB>, y<SUB>2</SUB>), remember that slope = (y<SUB>2</SUB> - y<SUB>1</SUB>) / (x<SUB>2</SUB> - x<SUB>1</SUB>) Your points are (2, 18) and (1, y). So, slope = (y - 18)/(1 - 2) slope = (y - 18)/(-1) or, slope = 18 - y Now, you know this slope must be 12: 18 - y = 12 Solve for y...... I hope this helps you.
kekepania said: I am having trouble fiuring this out, can you please help? A line passing through (2, 18) and (1, y) is parallel to a line with slope 12. What is the value of y? Click to expand... If the desired line is to be parallel to a line with slope 12, then the slope of the desired line must also be 12 (parallel lines have equal slopes). To find the slope of the line through (x<SUB>1</SUB>, y<SUB>1</SUB>) and (x<SUB>2</SUB>, y<SUB>2</SUB>), remember that slope = (y<SUB>2</SUB> - y<SUB>1</SUB>) / (x<SUB>2</SUB> - x<SUB>1</SUB>) Your points are (2, 18) and (1, y). So, slope = (y - 18)/(1 - 2) slope = (y - 18)/(-1) or, slope = 18 - y Now, you know this slope must be 12: 18 - y = 12 Solve for y...... I hope this helps you.
