# Week 7 - Week 7 Test Point(0,0 y >3 0 > 3 False statement y...

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Week 7 Test Point (0,0) y >3 0 > 3 False statement

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y>3 Series 1 f(x)=0*x+3; R²=NAN -8 -6 -4 -2 2 4 6 8 -8 -6 -4 -2 2 4 6 8 x y
4 4 4 4 4 4 4 4 4( 4) 4 16 20 ( 4,20) 0 4 4(0) 4 0 4 (0,4) 4 4 4(4) 4 16 12 (4, 12) x y x x y x x y x y x y + - - - = - = - - = + = - = = - = - = = = - = - = - - .(0,0) 4 4(0) 4 Test y y = - False

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4x+y>4 Series 1 f(x)=-4*x+4; R²=1 -8 -6 -4 -2 2 4 6 8 -8 -6 -4 -2 2 4 6 8 x y
3 4 4 12 12 4 12 3 12 4 3 12 4 4 4 4 3 3 4 4 3 ( 4) 3 4 3 3 6 ( 4, 6) 0 3 (0) 3 4 3 (0, 3) 4 3 (4) 3 4 3 3 0 (4,0) x y y y x y y x x y x y y x y y x y y - + - < + - - < - < - < = - - - = = - - = - - - = - = = - - = - = = - = Test (0,0) 3(0)-4(0)<12 0<12 True

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3x-4y<12 Series 1 f(x)=0.75*x-3; R²=1 -8 -6 -4 -2 2 4 6 8 -8 -6 -4 -2 2 4 6 8 x y Let the number of dimes be d, and the number of quarters be q \$30 3000. 10 25 3000 cents d q = + 2 ) (0) 0 7(0) 10 10 a f = - + = 2 ) (5) (5) 7(5) 10 25 35 10 70 b f = + + = + + =
2 ) ( 2) ( 2) 7( 2) 10 4 14 10 0 c f - = - + - + = - + = 3 4 3 11 3 4 11 3 4 11 3 4 4 11 3 4 4 3 11 ( ) 4 4 3 3 ( ) 2 4 4 x y x x y x y x y x f x x f x x - + + = + = + + = = + = + = +

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( ) 2 5 5 ( 5) 2( 5) 5 10 5 5 ( 5,5) 0 (0) 2(0) 5 0 5 5 (0, 5) 5 (5) 2(5) 5 10 5 15 (5, 15) f x x x f x f x f = - - = - - = - - - = - = - - = - - = - = - - = = - - = - - = - - Series 1 f(x)=-2*x-5; R²=1

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