# Distance from a point to a line eq. PROOF, but without matrices

(@jacobcullen)
New Member
Joined: 3 weeks ago
Posts: 2
28/02/2019 3:00 pm

I am in pre-calculus and when I solve for the distance from the point to a line using pure algebra my teacher said it the solution was neater with matrices but I don't really know anything about matrices other than finding 2x2 determinants. Is it possible to figure it out with just algebra, and if so can I get steps?

(@jacobcullen)
New Member
Joined: 3 weeks ago
Posts: 2
01/03/2019 11:19 am
Posted by: Jacobcullen

I am in pre-calculus and when I solve for the distance from the point to a line using pure algebra my teacher said it the solution was neater with matrices but I don't really know anything about matrices other than finding 2x2 determinants. Is it possible to figure it out with just algebra, and if so can I get steps?

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(@kundan-kumar-singh)
Active Member
Joined: 1 month ago
Posts: 5
06/03/2019 3:10 pm

You can use the formula: |ax1+by1+c|/sqrt(a^2+b^2),

assuming the Problem is in 2D as you are in pre-calculus.

Also, kindly provide the Problem along with your doubt for further clarification.

(@rekha-sisodiya)
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Joined: 2 weeks ago
Posts: 3
07/03/2019 7:32 pm

for your solution |ax1+by1+c|/sqrt(a^2+b^2), this formula is good!

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