SOLUTION: Write the equation of the line that contains the indicated points and meets the indicated conditions. Passing thru: (-2,1) a) parallel to 2x+3y=5 b) perpendicular to 2x-3y=5

Algebra ->  Points-lines-and-rays -> SOLUTION: Write the equation of the line that contains the indicated points and meets the indicated conditions. Passing thru: (-2,1) a) parallel to 2x+3y=5 b) perpendicular to 2x-3y=5      Log On


   



Question 1052371: Write the equation of the line that contains the indicated points and meets the indicated conditions. Passing thru: (-2,1)
a) parallel to 2x+3y=5 b) perpendicular to 2x-3y=5

Answer by josgarithmetic(39615) About Me  (Show Source):
You can put this solution on YOUR website!
Parallel to 2x+3y=5, will have the same slope, which if solve for y in terms of x and look at coefficient on x, is -2%2F3. Such line to pass through the given point, using point-slope form, is y-1=-%282%2F3%29%28x%2B2%29.


Perpendicular to 2x-3y=5, will have a slope negative reciprocal of that for this given line. Solve this given equation for y in terms of x, take the negative reciprocal of coefficient on x, and it will be -3%2F2. The line passing through the given point with this slope is, in point-slope form, y-1=-%283%2F2%29%28x%2B2%29.


converting between point-slope and slope-intercept forms

That should help you see how to also understand the standard form Ax+By=C. You CAN find the slope if you learn how to read this form of equation.

The work I described and did, could be done all in standard form, if you learn to read and use the standard form equation.