mccarthyrookie6491
09.01.2022 •
Mathematics
A) If the line 2x + 3y -8=0 is perpendicular to the line kx-6y =9 find k.
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Ответ:
k = 9.
Step-by-step explanation:
2x + 3y -8=0
3y = -2x + 8
y = -2/3 x + 8/3
So the slope of this line is -2/3.
Therefore the slope of a line perpendicular to the above is -1 /-2/3
= 3/2.
kx - 6y = 9
6y = kx - 9
y = k/6x - 3/2
But the slope is 3/2,
So k/6 = 3/2
2k = 18
k = 9.
Ответ:
<=> 3bx - 6ab = bx - 7ab + 3ab
<=> 3bx - bx = 6ab - 7ab + 3ab
<=> 2bx = 2ab
<=> x = a