SOLUTION: Find the equation of the line using the point-slope formula. Write the final equation using the slope-intercept form. perpendicular to 5y = x − 4 and passes through the point (â

Algebra ->  Coordinate Systems and Linear Equations -> SOLUTION: Find the equation of the line using the point-slope formula. Write the final equation using the slope-intercept form. perpendicular to 5y = x − 4 and passes through the point (â      Log On


   

Question 1133915: Find the equation of the line using the point-slope formula. Write the final equation using the slope-intercept form.
perpendicular to 5y = x − 4 and passes through the point (−2, 1)
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

Find the equation of the line using the point-slope formula.
y=mx%2Bb where m is a slope and b is y-intercept


if line is perpendicular to line 5y+=+x+-4, it has a slope negative reciprocal to a slope of the line 5y+=+x+-4
a slope of the line 5y+=+x+-4=>y+=+%281%2F5%29x+-4%2F5 is 1%2F5=>negative reciprocal is -1%2F%281%2F5%29=-5
so far your line is y=-5x%2Bb

and if passes through the point (-2, 1), use it to find b

1=-5%28-2%29%2Bb
1=10%2Bb
1-10=b
b=-9

your line is y=-5x-9