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Aleks [24]
4 years ago
7

Given the function f(x) = 3x – 7, find f(-8).

Mathematics
1 answer:
stepladder [879]4 years ago
6 0
Just plug the number in.

f(-8)=3(-8)-7=-31.

f(-8) equals -31.
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Solving the system of equations we get x=\frac{5}{3} and y=\frac{14}{3}

Step-by-step explanation:

We need to find the solution to the system of equations.

y= 4x-2\\y = x+ 3

Solving the given equations and finding the values of x and y

Let:

y= 4x-2\,\,\,eq(1)\\y = x+ 3\,\,\,eq(2)

Putting value of y from eq(2) into eq(1)

4x-2=x+3\\4x-x=3+2\\3x=5\\x=\frac{5}{3}

So, value of x is: x=\frac{5}{3}

Putting value of x in eq(2) to find value of y

y=x+3\\y=\frac{5}{3}+3\\y=\frac{5+3*3}{3}\\y=\frac{5+9}{3}\\y=\frac{14}{3}

So, value of y is: y=\frac{14}{3}

So, solving the system of equations we get x=\frac{5}{3} and y=\frac{14}{3}

Keywords: System of equations

Learn more about system of equations at:

  • brainly.com/question/9045597
  • brainly.com/question/3739260
  • brainly.com/question/13168205

#learnwithBrainly

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