Equation of a line Flashcards
1
Q
What is the formula for equation of a line?
A
y-y1= m(x-x1)
2
Q
How do you work out the length of a line segment?
What is it?
A
the square root of (X2-X1)^2 + (Y2-Y1)^2
it is disguised Pythagorus.
3
Q
How to you work out the perpendicular distance between a point and a line.
A
ax1+by1+c divided by the square root of a squared + b squared. (The positive outcome of this)
4
Q
What is a perpendicular bisector?
how would you work this out
A
A line perpendicular to another line that goes through the midpoint.
By finding the neg reciprocal and the midpoint of the line that is given.
5
Q
How would you, with coordinates, work out the area of a triangle?
A
“Box the triangle in”
make right angled triangles around it and make a larger rectangle. The subtract them.
