A. yes...it is a function because there is no repeating x values.
B. (5,2)(6,5)...slope = (5 - 2) / (6 - 5) = 3
y = mx + b
slope(m) = 3
(5,2)...x = 5 and y = 2
now we sub
2 = 3(5) + b
2 = 15 + b
2 - 15 = b
-13 = b
so the equation is : y = 3x - 13
when x = 7
y = 3(7) - 13....y = 21 - 13....y = 8
f(x) = 2x + 13...when x = 7
f(7) = 2(7) + 13...f(7) = 14 + 13.....f(7) = 27
the function has a greater value
C. f(x) = 2x + 13....when f(x) = 75
75 = 2x + 13
75 - 13 = 2x
62 = 2x
62/2 = x
31 = x
Answer:
8
Step-by-step explanation:
1+3=4
5+7=12
12-4=8
Problem 1
Answers: Choice A, choice D
The formula you use is
a & c/d = (a*d+c)/d
To convert from mixed number form to improper fraction form.
So,
6 & 2/3 = (6*3+2)/3 = (18+2)/3 = 20/3
And also,
8 & 1/5 = (8*5+1)/5 = (40+1)/5 = 41/5
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Problem 2
Answer: Reflection
Think of how mirrors cause a reflection and this should help you remember the term better. If we reflect point A over some line L, to get point A', then the distance from A to L is the same from A' to L also.
No, the rectangle cannot have x = 60 and y = 18 because x + y is less than 60
No, the rectangle cannot have x = 60 and y = 18 because x + y is less than 24
Yes, the rectangle can have x = 60 and y = 18 because x = 12 + 2y
Yes, the rectangle can have x = 60 and y = 18 because x = 24 + 2y
Miguel's 1 1/2 times can be written out as 1.5 because 1/2 is equal to 0.5,
To work out the distance you need to times Abby's miles by 1.5. Another way of doing this is by dividing Abby's miles by 2, working out the 0.5, and then adding her original miles, adding on the 1 to make 1.5.
2 1/3 / 2 = 1 1/6
1 1/6 + 2 1/3 = 3 3/6 = 3.5 miles
Hope this helps! :)
