What is the equation of the line?
A. y= 1/3x - 1
B. y= -1/3x + 1
C. y= -3x + 1
D. y= 3x - 1
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Answer:
C. y = -3x + 1
Step-by-step explanation:
y = mx + b
The y-intercept is 1, so b = 1 and we have
y = mx + 1
Now we use two points to find the slope.
Look at points (0, 1) and (-1, 4).
m = slope = (difference in y)/(difference in x)
m = (4 - 1)/(-1 - 0) = 3/(-1) = -3
y = -3x + 1
Answer: y = -3x + 1