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Find the value of y for a given value of x, if y varies directly with x.
If y = –252 when x = 84, what is y when x = 74?
 one year ago
 one year ago
Find the value of y for a given value of x, if y varies directly with x. If y = –252 when x = 84, what is y when x = 74?
 one year ago
 one year ago

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swiftskier96Best ResponseYou've already chosen the best response.2
Do you know how to cross multiply?
 one year ago

swiftskier96Best ResponseYou've already chosen the best response.2
Ok. Well here is the problem you are talking about. dw:1349372516244:dw
 one year ago

swiftskier96Best ResponseYou've already chosen the best response.2
Now just solve for y. Whats the answer?
 one year ago

ihavemathquestionsBest ResponseYou've already chosen the best response.1
1764 = 84y
 one year ago

swiftskier96Best ResponseYou've already chosen the best response.2
What i did is when i cross multiplied, i got 252(74) = 84(y). Then it looked like this...dw:1349372692894:dw
 one year ago

swiftskier96Best ResponseYou've already chosen the best response.2
Now just multiply 252 and 74 and divide it by 84. And that equals?
 one year ago

ihavemathquestionsBest ResponseYou've already chosen the best response.1
For each function, what is the output of the given input? For f(x) = 4x + 7, find f(4)
 one year ago

swiftskier96Best ResponseYou've already chosen the best response.2
Is this a quick check or quiz? Cause i remember doing something like this.
 one year ago

ihavemathquestionsBest ResponseYou've already chosen the best response.1
this is just my brother and i we make eachother do math its like fun
 one year ago

ihavemathquestionsBest ResponseYou've already chosen the best response.1
we find random q's online
 one year ago

ihavemathquestionsBest ResponseYou've already chosen the best response.1
these are the qs im giving to him that idk the answer and i needa know the answers so i can check his
 one year ago

swiftskier96Best ResponseYou've already chosen the best response.2
Ohh ok. Well that should be easy to do. Just plug 4 into x. It should look like this. f(4) = 4(4) + 7.
 one year ago
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