Determine the slope and the y-intercept of the graph of the equation.-x + 3y - 21 = 0
A. m = - 
; (0, 7)
B. m = 3; (0, -21)
C. m = 
; (0, 7)
D. m = -1; (0, 21)
Answer: C
Mathematics
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?
?
A. 
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