Line - examples
- Curve and line
The equation of a curve C is y=2x² -8x+9 and the equation of a line L is x+ y=3 (1) Find the x co-ordinates of the points of intersection of L and C. (2) Show that one of these points is also the stationary point of C?
- Angle between lines
Calculate the angle between these two lines: ? ?
What is the slope of a line with an inclination 52°?
Circle touch two parallel lines p and q; and its center lies on a line a, which is secant of lines p and q. Write the equation of circle and determine the coordinates of the center and radius. p: -x+3y+1 = 0 q: x-3y-1 = 0 a: -10x-3y-2 = 0
- Hexagon - MO
The picture shows the ABCD square, the EFGD square and the HIJD rectangle. Points J and G lie on the side CD and is true |DJ|
- XY triangle
Determine area of triangle given by line -7x+7y+63=0 and coordinate axes x and y.
- Pizza master
Master says that he can splits pizza to 16 parts by five equals straight cuts. Is it possible?
In how many points will intersect 11 different lines, where no two are parallel?
What is the slope of the perpendicular bisector of line segment AB if A[-9,-8] and B[-8,0]?
Determine the slope of the line perpendicular to the line p: y = -10x +7.
If the segment of the line y = -8x +4 that lies in quadrant I is rotated about the y-axis, a cone is formed. What is the volume of the cone?
Straight line passing through points A [-3; 22] and B [33; -2]. Determine the total number of points of the line which both coordinates are positive integers.
In the triangle ABC is point D[-8,-9,9], which is the center of the |BC| and point G[5,9,5], which is the center of gravity of the triangle. Find the coordinates of the vertex A[x,y,z].
Line p passing through A[-10, 1] and has direction vector v=(2, 4). Is point B[-20, -19] on the line p?
- Square side
Calculate length of side square ABCD with vertex A[0, 0] if diagonal BD lies on line p: -5x +7y +20 =0.
- The angle of lines
Calculate the angle of two lines y=-3x+25 and y=x-3
4 m long ladder touches the cube 1mx1m at the wall. How high reach on the wall?
A straight line p given by the equation ?. Calculate the size of angle in degrees between line p and y-axis.
In the circle with a radius 7.5 cm are constructed two parallel chord whose lengths are 9 cm and 12 cm. Calculate the distance of these chords (if there are two possible solutions write both).
How many different circles is determined by 12 points at the plane, if 7 of them lie in a straight line?