A line has y-intercept (0, 3) and is perpendicular to the line 2x + y = 3. Find the x-intercept of the line.
Math - Steve, Friday, December 27, 2013 at 8:09pm
since the given line has slope -2, we want slope 1/2.
So, y = x/2 + b
Since when x=0, y=3, b=3 and
y = x/2 + 3
So, when y=0, x=?
Math - John, Friday, December 27, 2013 at 9:14pm
So would the answer be 6 or 3 then
Math - Reiny, Friday, December 27, 2013 at 9:27pm
Neither, it would be -6
taking Steve's equation of y= x/2 + 3 , and letting y = 0
0 = x/2 + 3
-3 = x/2
-6 = x