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amylumey2005
09.07.2021 •
Mathematics
Write the equation of the line parallel to 4y - x = -20 that passes through the point (8,3).
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Ответ:
y= ¼x +1
Step-by-step explanation:
Rewriting the equation into the slope-intercept form (y= mx +c, where m is the gradient and c is the y- intercept):
4y -x= -20
4y= x -20 (+x on both sides)
y= ¼x -5 (÷4 throughout)
Thus, slope of given line is ¼.
Parallel lines have the same gradient.
Gradient of line= ¼
y= ¼x +c
To find the value of c, substitute a pair of coordinates into the equation.
When x= 8, y= 3,
3= ¼(8) +c
3= 2 +c
c= 3 -2
c= 1
Hence the equation of the line is y= ¼x +1.
Ответ:
or in radians
Step-by-step explanation:
We have the opposite side of angle x and hypotenuse of the right triangle.
Let's find the other side.