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andreyandreev [35.5K]
3 years ago
13

HELP PLEASE

Mathematics
2 answers:
soldier1979 [14.2K]3 years ago
6 0
F(2)=7(2)-5=14-5=9
g(4)=4(4)=16
f(2)-g(4)=9-16=-7

f(2)-g(4)=-7
B
Soloha48 [4]3 years ago
5 0
Do you see that when we change

f(x) = 7x - 5 

to 

f(2) = 7(2) - 5

we are simply saying to substitute in 2 for x? Well that is what we are doing:

f(2) = 7(2) - 5

f(2) = 14 - 5

f(2) = 9 

Now we find g(4) the same way:

g(x) = 4(x)

g(4) = 4(4)

g(4) = 16

Now we find the difference of the two functions:

f(2) - g(4)

9 - 16

-7

So, the answer is B.
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7 = -x+3. Consider the line y = Find the equation of the line that is parallel to this line and passes through the point (-5, 6)
artcher [175]

Answer with explanation:

The equation of line is, y= -x +3

→x+y-3=0---------(1)

⇒Equation of line Parallel to Line , ax +by +c=0 is given by, ax + by +K=0.

Equation of Line Parallel to Line 1 is

  x+y+k=0

The Line passes through , (-5,6).

→ -5+6+k=0

→ k+1=0

→k= -1

So, equation of Line Parallel to line 1 is

x+y-1=0

⇒Equation of line Perpendicular  to Line , ax +by +c=0 is given by, bx - a y +K=0.

Equation of Line Perpendicular to Line 1 is

  x-y+k=0

The Line passes through , (-5,6).

→ -5-6+k=0

→ k-11=0

→k= 11

So, equation of Line Parallel to line 1 is

x-y+11=0

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