Choose the slope-intercept equation of the line that passes through the point (-5, -1) and is perpendicular to y = 5/2x + 2.

y = 2/5x + 1

y = -5/2x - 27/2

y = -2/5x - 3

y = 5/2x + 23/2

Question

Choose the slope-intercept equation of the line that passes through the point (-5, -1) and is perpendicular to y = 5/2x + 2.

y = 2/5x + 1

y = -5/2x - 27/2

y = -2/5x - 3

y = 5/2x + 23/2

matheducatormcg · Answer

perpendicular slopes are opposite signs and reciprocals of each other.
do you know the slope of your line? hint: its the m in the form y=mx+b

matheducatormcg · Answer

once you've determined the m, flip the fraction and make it the opposite sign.

matheducatormcg · Answer

that's the perpendicular slope

anonymous · Answer

y = -2/5x - 3?

matheducatormcg · Answer

after you have perpendicular slope, substitute the point (-5,-1) into the equation.

matheducatormcg · Answer

yah.  thats it.

anonymous · Answer

aha, thank you for the help!

matheducatormcg · Answer

the slope gave it away.  be sure to know how to solve for the b, y-intercept, when there is more than one option with the same slope.