Answer: The slope is 4.5
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Explanation:
The equation y = -6 + 4.5x is the same as y = 4.5x + (-6)
Compare this to y = mx + b and we see that
m = 4.5 is the slope
b = -6 is the y intercept.
note: we can write y = 4.5x + (-6) as y = 4.5x - 6
