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Three points on the graph of the function 
f(x) are 
{(0,1),(1,4),(2,9)}. Which equation represents 
f(x) ?

f(x)=5x-1

f(x)=4^(x)

f(x)=3x+1

f(x)=(x+1)^(2)

Three points on the graph of the function f(x) f(x) are {(0,1),(1,4),(2,9)} \{(0,1),(1,4),(2,9)\} . Which equation represents f(x) f(x) ?\newlinef(x)=5x1 f(x)=5 x-1 \newlinef(x)=4x f(x)=4^{x} \newlinef(x)=3x+1 f(x)=3 x+1 \newlinef(x)=(x+1)2 f(x)=(x+1)^{2}

Full solution

Q. Three points on the graph of the function f(x) f(x) are {(0,1),(1,4),(2,9)} \{(0,1),(1,4),(2,9)\} . Which equation represents f(x) f(x) ?\newlinef(x)=5x1 f(x)=5 x-1 \newlinef(x)=4x f(x)=4^{x} \newlinef(x)=3x+1 f(x)=3 x+1 \newlinef(x)=(x+1)2 f(x)=(x+1)^{2}
  1. Test Option 11: Test the given points with the first option f(x)=5x1f(x) = 5x - 1.\newlineSubstitute x=0x = 0 into f(x)=5x1f(x) = 5x - 1 to see if it equals 11.\newlinef(0)=5(0)1=1f(0) = 5(0) - 1 = -1\newlineSince f(0)f(0) should equal 11, this option is incorrect.
  2. Test Option 22: Test the given points with the second option f(x)=4xf(x) = 4^{x}. Substitute x=0x = 0 into f(x)=4xf(x) = 4^{x} to see if it equals 11. f(0)=40=1f(0) = 4^{0} = 1 This matches the first point (0,1)(0,1). Now test the second point (1,4)(1,4). f(1)=41=4f(1) = 4^{1} = 4 This matches the second point (1,4)(1,4). Now test the third point (2,9)(2,9). x=0x = 000 Since x=0x = 011 should equal x=0x = 022, this option is incorrect.
  3. Test Option 33: Test the given points with the third option f(x)=3x+1f(x) = 3x + 1.\newlineSubstitute x=0x = 0 into f(x)=3x+1f(x) = 3x + 1 to see if it equals 11.\newlinef(0)=3(0)+1=1f(0) = 3(0) + 1 = 1\newlineThis matches the first point (0,1)(0,1). Now test the second point (1,4)(1,4).\newlinef(1)=3(1)+1=4f(1) = 3(1) + 1 = 4\newlineThis matches the second point (1,4)(1,4). Now test the third point (2,9)(2,9).\newlinex=0x = 000\newlineSince x=0x = 011 should equal x=0x = 022, this option is incorrect.
  4. Test Option 44: Test the given points with the fourth option f(x)=(x+1)2f(x) = (x + 1)^{2}. Substitute x=0x = 0 into f(x)=(x+1)2f(x) = (x + 1)^{2} to see if it equals 11. f(0)=(0+1)2=1f(0) = (0 + 1)^{2} = 1 This matches the first point (0,1)(0,1). Now test the second point (1,4)(1,4). f(1)=(1+1)2=4f(1) = (1 + 1)^{2} = 4 This matches the second point (1,4)(1,4). Now test the third point (2,9)(2,9). x=0x = 000 This matches the third point (2,9)(2,9). Therefore, this option is correct.

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