A tree initially measured 27 1/2 feet tall. Over the next 3 1/2 years, it grew to a final height of 35 1/2 feet. During those 3
1/2 years, what was average yearly growth rate of the height of the tree
A.) 2 1/7 feet/year
B.) 2 2/7 feet/year
C.) 2 4/7 feet/year
D.) 2 6/7 feet/year
A.) 2 1/7 feet/year
B.) 2 2/7 feet/year
C.) 2 4/7 feet/year
D.) 2 6/7 feet/year
2 answers:
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Answer: y = ½x - 2
Step-by-step explanation:
<u>Slope-intercept form: y = mx + b</u>
- m = slope =
- b = y-intercept ⇒ Substitute in a given point to the function to find b
y = ½x + b
2 = ½(8) + b
2 = 8/2 + b
2 = 4 + b
2 - 4 = b
b = -2
<u>y = ½x - 2</u>