Please help, help needed
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Tìm giá trị của x :
Bây giờ, có hai trường hợp :
Trường hợp 1. khi nào x + 3 = 0
- x = -3
Trường hợp 2. khi nào x - 2 = 0
- x = 2
Tôi hy vọng nó đã giúp !
Equation of line passing through (2, -2) and parallel to 2x+3y = -8 is
Need to write equation of line parallel to 2x+3y=-8 and passes through the point (2, -2)
Generic slope intercept form of a line is given by y = mx + c
where "m" = slope of the line and "c" is the y - intercept
Let’s first find slope intercept form of 2x+3y=-8 to get slope of line
On comparing above slope intercept form of given equation with generic slope intercept form y = mx + c,
We know that slopes of parallel lines are always equal
So the slope of line passing through (2, -2) is also
Equation of line passing through and having slope of m is given by
Substituting the values in equation of line we get
Hence equation of line passing through (2 , -2) and parallel to 2x + 3y = -8 is given as
Answer:
Step-by-step explanation:
First, let's change those variables to x and y, just for the sake of convenience. In order to find the inverse of a function algebraically, switch the x and y coordinates, then solve for the new y. Letting y = A(n) and x = n (we will switch them back when we're done):
y = 3x - 20. This is linear; a line with a slope of 3 and a y-intercept of -20. When we switch the x and the y, we get:
x = 3y - 20. Now we solve for the new y. Begin by adding 20 to both sides:
x + 20 = 3y. Now divide both sides by 3:
, or to write it in slope-intercept form, like the function you started with:
This is also a line, with a slope of 1/3 and a y-intercept of +20/3
Now, replacing:
That is how to write the inverse using function notation. The little -1 as an exponent tells us that this is the inverse of the function A(n).