40. Determine 'x' if the points (1,5), (2, x) and (-2, -1) are collinear
A. 6
B. 5
C. 4
D. 3
Answers
Answered by
0
Answer:
do it by yourself by just find slope of a line
Step-by-step explanation:
they are collinear then their slopes are equal. just equat from this
Answered by
0
Answer:
x=7
Step-by-step explanation:
- use Formula Of Collinear, x1(y2-y3)+x2(y3-y1)+x3(y1-y2)=0
- 1(x+1)+2(-1-5)-2(5-x)=0
- x+1-12-10+2x=0
- 3x=21
- x=7
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