If you mean points of (-2, 1) and (-4, -5) then the slope works out as 3
Do you mean: (2, 13) and (4, 5) or (21, 3) and (4, 5) If it is the former then the slope is -4 If it is the latter then the slope is -2/17
The slope for a 45 degree slope triangle is 1/1 because the slope triangle is an isosceles right triangle.
The slope of a line and the perpendicular to that line, when multiplied together, give -1. So, if the first line has a slope of 1/21, the second has a slope of -21.
It is approx 1.4281
1
Points: (21, 10) and (-19, 0) Slope: 1/4
Points: (4, 5) and (-2, -4) Slope: 3/2
21/45= 7/15
28
LCM of 21 and 45=315 Factors of 21= 3x7 Factors of 45=3x3x5 Lcm= 3x5x7x3=315
Points: (-12, -17) and (21, 5) Slope: 2/3
It is written as 21:45