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Linear Equations in One Variable

SAT Math· difficulty 4/5

Test scores model: at hours studied h=0h = 0, score =50= 50; at h=10h = 10, score =90= 90. Linear model S(h)=?S(h) = ?

  • A

    S=4h+40S = 4h + 40

  • B

    S=3h+60S = 3h + 60

  • C

    S=4h+50S = 4h + 50

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  • D

    S=5h+50S = 5h + 50

Explanation

Slope =90−5010=4= \frac{90 - 50}{10} = 4. Intercept =50= 50. So S(h)=4h+50S(h) = 4h + 50.

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