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Use the tables to find the composition.

X
-4 -2
f(x) 0
X
0
2 4 6
-2-4-6-2 2
-6 -4 -2 0 2 4
g(x) 0 -4-2 6 4 2
f(g(-6)) =

Use the tables to find the composition. X -4 -2 f(x) 0 X 0 2 4 6 -2-4-6-2 2 -6 -4 -2 0 2 4 g-example-1
User Helen
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1 Answer

6 votes

Answer:

f(g(x)) = -4

Explanation:

take 2 points in g(x)

(-6,0) (-4,-4)

g(x) = -2x - 12

g(-6) = -2(-6) - 12

g(-6) = 12 - 12 = 0

put 0 in x in f(x)

take 2 points in f(x)

(-4,0) (-2,-2)

f(x) = -x -4

f(0) = 0 - 4

f(0) = - 4

f(g(x)) = -4

showing the work below

Equation of a Line

(-6,0) (-4,-4)

To work with the two given points (-6,0) and (-4,-4), you can use the slope-intercept form of the equation of a line, which is y = mx + b, where m is the slope of the line and b is the y-intercept.

To find the slope, you can use the formula:

m = (y2 - y1) / (x2 - x1)

where (x1, y1) and (x2, y2) are the coordinates of the two points.

So, substituting the given values, we get:

m = (-4 - 0) / (-4 - (-6))

m = -4 / 2

m = -2

To find the y-intercept, we can use one of the points and the slope in the slope-intercept form:

y = mx + b

0 = -2(-6) + b

0 = 12 + b

b = -12

Therefore, the equation of the line passing through the points (-6,0) and (-4,-4) is:

y = -2x - 12

(-4,0) (-2,-2)

To find the equation of the line passing through the two given points (-4,0) and (-2,-2), we can use the slope-intercept form of the equation of a line, which is y = mx + b, where m is the slope of the line and b is the y-intercept.

To find the slope, we can use the formula:

m = (y2 - y1) / (x2 - x1)

where (x1, y1) and (x2, y2) are the coordinates of the two points.

Substituting the given values, we get:

m = (-2 - 0) / (-2 - (-4))

m = -2 / 2

m = -1

To find the y-intercept, we can use one of the points and the slope in the slope-intercept form:

y = mx + b

0 = -1(-4) + b

0 = 4 + b

b = -4

Therefore, the equation of the line passing through the points (-4,0) and (-2,-2) is:

y = -x - 4

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User Yevgeniy Brikman
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