Hi There!
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Slope Intercept Form: y = mx + b
Where: m = slope and b = y-intercept
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Question 11: The slope being 0.5 is the pay for the amount of miles he pays daily.
Question 12: y = 2x + 20
Question 13: y = 25x + 50
Question 14: y = 1/2x + 6
Question 15: y = 2x + 15
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Hope This Helps :)
21.6 units
Calculate the length of the 2 inclined sides using the distance formula
d = √(x₂ - x₁ )² + (y₂ - y₁ )²
with (x₁, y₁ ) = (- 3, 3 ) and (x₂, y₂ ) = (3, 4 )
d = √(3 + 3 )² + (4 - 3)² = √(36 + 1 ) = √37
repeat for (x₁, y₁ ) = (- 3, 3 ) and (x₂, y₂ ) = (3, - 3 )
d = √(3 + 3 )² + (- 3 - 3 )² = √(36 + 36 ) = √72
the vertical side has a length of 7 units
perimeter = √37 + √72 + 7 = 21.6 ( nearest tenth of a unit )
<span>3a^2+12a = 3a(a+4)
...</span>
Multiply 3 by 4, which gets you 12 mph
