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krystianah
01.08.2019 •
Mathematics
What is the x-intercept of the line with this equation -2x + 1/3y =18 0)plz answer fast and explain if you can
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Ответ:
-2x + (1/3)y = 18
-2x + 0 = 18
-2x =18
X = -9
(-9,0)
Ответ:
The correct options are
(1) (B) parallel
(2) (C) neither.
Step-by-step explanation: We know that two straight lines are
(i) parallel, if they have equal slopes,
(ii) perpendicular, if the product of their slopes is -1.
Also, the slope-intercept form of the equation of a straight line is
(1) We are given to check whether the following lines are parallel, perpendicular or neither :
Comparing equation (i) with the slope-intercept form, we get
From equation (ii), we have
So,![m_2=\dfrac{1}{2}.](/tpl/images/0492/9005/12e23.png)
We have
Therefore, the given lines are perpendicular.
Option (B) is CORRECT.
(2) We are given to check whether the following lines are parallel, perpendicular or neither :
Comparing equation (iii) with the slope-intercept form, we get
From equation (iv), we have
So,![m_2=\dfrac{1}{5}.](/tpl/images/0492/9005/805fb.png)
We have
Therefore, the given lines are neither parallel nor perpendicular.
Option (C) is CORRECT.
Thus, both the questions are answered.