Grace can cut the string into four equal pieces by cutting every two inch
Slope is the change in y-values divided by the change in x-values. You can use the following formula to calculate slope:
y₁ - y₂ / x₁ - x₂
The coordinates: (1, 7) and (10, 1)
y₁ = 7
y₂ = 1
x₁ = 1
x₂ = 10
7 - 1 / 1 - 10
6 / -9
-2 / 3
Answer:
The slope of the line that passes through the points (1, 7) and (10, 1) is -2/3.
Let x be the 1st number
x + 9 be the second number
Equation:
x + x+9 = 171
Solution:
2x + 9 = 171
2x = 171 - 9
2x = 162
x = 81
x + 9 = 90
81 + 90 = 171
67 multiplied by 3 is 201, so there is 201 people in the age group 12-29. Also, 67% is approximately two thirds, and we can see that reflected in our answer.
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