Help plz

• Jun 28th 2005, 06:58 PM
Hayabusa
Help plz
I need to write an equation in slope-intercept form of a line with the following characteristics: perpendicular to the graph of 2x - 3y = 12 and passing through the point at (4,3).

I need help with this problem I'm a little lots. Do I need to use y=mx+b right?
• Jun 29th 2005, 06:13 AM
hpe
Quote:

Originally Posted by Hayabusa
I need to write an equation in slope-intercept form of a line with the following characteristics: perpendicular to the graph of 2x - 3y = 12 and passing through the point at (4,3).

First find the point-slope-form. Since you alreay have a point, all you need is the slope. Then use algebraic manipulation to obtain the slope-intercept form.

To find the slope, use the information that the new line should be \$\displaystyle \perp\$ the given one. How are the slopes of two perpendicular lines related?

OK, so you still need the slope of the given line. Use algebraic manipulation (solve the equation for y) to find this slope.

Hope this helps :-)
• Jul 3rd 2005, 11:20 AM
Hayabusa
thank you.