Question

if 7y-5x=3, what is the smallest integer value of

x for which y is greater than 75

Answer 1

that was quick

Answer 2

I was looking for you!

Answer 3

tips?

Answer 4

yeah

Answer 5

105

Answer 6

smallest integer value

Answer 7

if y=76, x=105.8

Answer 8

You can set up the equation with y as the independent variable, that is, x=(some expression in y). Then, put 75 in for y. Solve for x. Bump x up to the next highest integer.

Answer 9

however

Answer 10

the smallest integer would be 105

Answer 11

because there are numbers less than 76 and more than 75

Answer 12

that would allow x to be 105

Answer 13

if rounded

Answer 14

you see what I did?

Answer 15

Yes, but you're concentrating on y when you should be concentrating on x. This is sort of a trick question which is really telling you to solve for x instead of the usual solving for y.

Answer 16

well

Answer 17

yeah

Answer 18

the smallest integer value being 105 for x

Answer 19

yeah

Answer 20

105

Answer 21

105 would be the smallest greater integer x if y equaled greater than 74

Answer 22

I mean 75

Answer 23

ao

Answer 24

so

Answer 25

most likely 75.5

Answer 26

actually, a number bit smaller

Answer 27

but you get the picture, right?

Answer 28

The problem as stated does not require y to be an integer, only that x be an integer, so, as long as you can get infinitesimally over 75 for y, that's the minimum x. Now, x might not end up being an integer, so you have to increase whatever value you have for x to the next highest integer and that will be your smallest integer for x.

Answer 29

if y equaled between 75-75.5, x would equal=105, the smallest integer value?

Answer 30

yeah

Answer 31

you see what I did?

Answer 32

between 75-75.5 for y would give x the value of 105

Answer 33

you see now?

Answer 34

the next integer up from 75

Answer 35

104.4 was if y=75

Answer 36

75.5=105.1

Answer 37

so between 75-75.5 would x possibly =105

Answer 38

you see what I am saying now?

Answer 39

You're still working the problem backward and creating a lot of unnecessary work for yourself. Just solve for x instead of for y.

Answer 40

you can't

Answer 41

you have to solve for y first

Answer 42

you have to pick a number for y

Answer 43

between 75-75.5

Answer 44

to find x

Answer 45

you no numbers to pick for x

Answer 46

you see what I am trying to say?

Answer 47

You're still going about it wrong. Just state the equation as x = (some expression in y) and almost all your work is done.

Answer 48

ahh

Answer 49

now I see your logic

Answer 50

Now, x = (7y-3)/5. Do you see that?

Answer 51

x=7/5y-3/5

Answer 52

7y-3/5

Answer 53

k

Answer 54

Your last 2 equations are off. Just look at my latest response and you'll see the equation since I wrote it out for you.

Answer 55

look

Answer 56

if y=75

Answer 57

522/5

Answer 58

104.4

Answer 59

so the next greatest integer would be 105

Answer 60

Yes, x would equal 104.4, but you need the x to be the next higher integer and then that 105 will be the smallest integer where y is guaranteed to be at least 75. Nowyou're on the right track, but I strongly suggest that you review all my posts here. All of them. And then you will see how to proceed with this.

Answer 61

so I still have a flaw?

Answer 62

x=1.4y-.6

Answer 63

1.4 times 75

Answer 64

ahh

Answer 65

that it?

Answer 66

105?

Answer 67

Well, with you or with anyone, I can't get inside someone else's head to see how he works through a problem, but something tells me that you don't 100% agree that you HAVE to solve for x, not y.

Answer 68

k

Answer 69

ty, though

Answer 70

If you do that, and it's the only way, you will be on the right track, so it would be very VERY good for you to review this problem. And thx for the medal.