+180 A line has slope 2. Find the area of the triangle formed by this line and the coordinate axes, if the distance between the origin and the line is 5
All Help is appreciated!
+37146 The PERPINDICULAR line from the origin has a slope of - 1/m = -1/2
so this line is y = - 1/2 x
A circle of radius 5 , centered at the origin ( x^2 + y^2 = 5^2 )
Intersects are prpindicular line at (4.472 , -2.236)
NOW....the equation of the line that contains THIS point and has a slope of 2 is
y + 2.236 = 2 ( x - 4.472)
or y = 2x - 11.18
This has a y-axis intercept of - 11.18 and the x intercept is 5.59
Area of the triangle is 1/2 base * height
= 1/2 * 11.18 * 5.59 = 31.25 units^2
Here is a Desmos graph showing all of this :
