SOLUTION: Write an equation of a line pependicular to y= -1/4x +5

Algebra.Com
Question 121333: Write an equation of a line pependicular to y= -1/4x +5
Answer by MathLover1(20849)   (Show Source): You can put this solution on YOUR website!
a line pependicular to
recall:
a pependicular lines have the product of slopes equal to -1
or
m* m[1]= -1
given:
........this is a slope-intercept form and the slope m is equal to -1/4

so, we need to find the slope m[1]











m[1]= 4

the slope-intercept form will be:

if you assume that , your equation will be:

here is the graph:
Solved by pluggable solver: Solve the System of Equations by Graphing


Let's look at the first equation



Multiply both sides of the first equation by the LCD 4



Distribute



---------




So our new system of equations is:










In order to graph these equations, we need to solve for y for each equation.




So let's solve for y on the first equation


Start with the given equation



Subtract from both sides



Rearrange the equation



Divide both sides by



Break up the fraction



Reduce



Now lets graph (note: if you need help with graphing, check out this solver)



Graph of




So let's solve for y on the second equation


Start with the given equation



Add to both sides



Rearrange the equation



Divide both sides by



Break up the fraction



Reduce





Now lets add the graph of to our first plot to get:


Graph of (red) and (green)


From the graph, we can see that the two lines intersect at the point (,) (note: you might have to adjust the window to see the intersection)






RELATED QUESTIONS

I have an assigment on eqautions, and it says "Write an eqaution of a line parrallel to... (answered by rapaljer)
Write an equation of the line that passes through (-5, -1) and is parallel to the line y... (answered by Cromlix)
Given a line with equation 4x + y = 2. Write an equation in point-slope form of the line (answered by josgarithmetic)
Write the equation of a line perpendicular to the given line but passing through the... (answered by TimothyLamb)
Write an equation for the line that passes through (0,5) and is parallel to the line... (answered by ewatrrr)
Write an equation of the line passing through (–8, –3) and perpendicular to y =1/4x+2 .... (answered by lwsshak3)
Write an equation of a line parallel to y = 1 over 4x − 6 in slope-intercept form... (answered by ewatrrr)
write an equation of perpendicular line through (1,-5) perpendicular to... (answered by MathLover1,tutoringisfun)