(-2, -4) , (0, 0), (4, a) and (b,18) is on a perpendicular choose the sum of A and B
I'm going to take a guess here........I think (-2, -4) and (0, 0) are on one line and (4, a) and (b, 18) are on a perpendicular line......so....the slope of the first line is
[-4 -0] / [-2 -0] = -4/-2 = 2
And for the second line, the slope would be -1/2 ....so we have......
[18 - a] / [ b - 4] = -1/2 ...... or.....
2[18 - a] = 4 - b
36 - 2a = 4 - b
b = 2a - 32
Then, we can "choose" any sum we want.....for instance, letting a = 16 means that b = 0
And their sum is just 16
[I have no idea if this is the correct interpretation, or not !!! ]
I have no idea what you re talking about -
Hey Chris, do you understand this one?
I'm going to take a guess here........I think (-2, -4) and (0, 0) are on one line and (4, a) and (b, 18) are on a perpendicular line......so....the slope of the first line is
[-4 -0] / [-2 -0] = -4/-2 = 2
And for the second line, the slope would be -1/2 ....so we have......
[18 - a] / [ b - 4] = -1/2 ...... or.....
2[18 - a] = 4 - b
36 - 2a = 4 - b
b = 2a - 32
Then, we can "choose" any sum we want.....for instance, letting a = 16 means that b = 0
And their sum is just 16
[I have no idea if this is the correct interpretation, or not !!! ]