
The equation of a line reflected about another line
2017年1月8日 · The premise was to use a arbitrary line perpendicular to the parallel lines to obtain points of intersection that would be used in the midpoint formula to get a point within the …
slope of a line in 3D coordinate system - Mathematics Stack …
11 When moving on from two- to three-dimensional geometry, we need three different slopes to characterize the line passing through two points. These can be pictured as the slopes of the …
Is the slope of a vertical line infinity or undefined?
By slope I mean derivative. Is something being infinity the same thing as being undefined? Is the slope of a vertical line negative infinity or positive infinity?
find slope of normal from slope of tangent - Mathematics Stack …
2021年7月16日 · You've just gone backwards, and asked the question "what would the tangent line slope be where the perpendicular slope is $-20$?" You're thinking about it too hard. If the …
How to find instantaneous velocity - Mathematics Stack Exchange
The approximation for the instantaneous velocity is just the slope of the line segment connecting the two points (no need to find the equation of the tangent line).
What is the equation for a 3D line? - Mathematics Stack Exchange
2013年5月28日 · For a line, the number of coordinates that can be freely determined is one. However, in this function, f (x,y), there are two. So it is impossible to write it in this form.
Find the slope of a line given a point and an angle
The slope is given by the change in y for a given change in x. From trig, you have that the tangent of an angle in a right triangle is the measure of the side of the triangle opposite the angle …
linear algebra - Orthogonal projection of a point onto a line ...
2017年7月28日 · Using the same observation, that two orthogonal slopes multiplied together make -1, the slope of the projection line is -1/m and it is also the rise over run for the arbitrary …
What do the sign and the value of a slope tell us regarding the …
A slope determines how steep a line is and the sign indicates if it's going "uphill" or "downhill". The lowest absolute slope (the absolute value of a slope) is $0$ which means the line is perfectly …
Finding equations of tangent lines that are parallel
2012年5月10日 · Solution: The slope of given curve is dy/dx = 2/ (x+1)^2 We have to find equations of tangent lines that are parallel that means If we take any two tangent lines at …