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Linear Functions

SAT Math· difficulty 3/5

A graph of a linear function passes through (0,−2)(0, -2) and (4,6)(4, 6). Which equation represents the function?

  • A

    y=2x−2y = 2x - 2

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  • B

    y=12x−2y = \dfrac{1}{2}x - 2

  • C

    y=4x−2y = 4x - 2

  • D

    y=−2x+2y = -2x + 2

Explanation

Slope =8/4=2= 8/4 = 2, yy-intercept =−2= -2.

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