 please help me with this math question? - Page 2 - XP Math - Forums Sign Up FREE! | Sign In | Classroom Setup | Common Core Alignment  XP Math - Forums please help me with this math question?  07-16-2007 #11 meg10584 Guest   Posts: n/a for the equation y = 2x + 3, the equation is already in slope intercept form. (y = mx + b where m is the slope and b is the y intercept) so we know that the slope of that line is 2. two lines that are parallel have the same slopetwo lines that are perpendicular have slopes that are negative reciprocals of each other. Since the we want a line perpendicular to one with a slope of 2, we want the new line to have a slope of -1/2 so the new line would be y = -1/2x + b to solve for the correct b, you plug in the x and y point that the line is supposed to pass through, (3, 4)so 4 = -1/2(3) + b 4 = -3/2 + b 11/2 = b so your new line in slope intercept form is y = -1/2x + 11/2  07-16-2007 #12 Desney S Guest   Posts: n/a use google  07-16-2007 #13 bug Guest   Posts: n/a slope of given line=m1=2slope of line perpendicular to this= -1/2equation of reqd line(y-4)= -1/2(x-3)2y-8= -x+32y+x=11therefore,reqd equation is2y+x=11  Thread Tools Show Printable Version Email this Page Display Modes Linear Mode Switch to Hybrid Mode Switch to Threaded Mode Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is Off Forum Rules
 Forum Jump User Control Panel Private Messages Subscriptions Who's Online Search Forums Forums Home Welcome     XP Math News     Off-Topic Discussion Mathematics     XP Math Games Worksheets     Homework Help     Problems Library     Math Challenges

All times are GMT -4. The time now is 10:56 AM.

 Contact Us - XP Math - Forums - Archive - Privacy Statement - Top