Question

Can someone walk me through solving y=3\2x-1

Answer 1

are you trying to solve for x?

Answer 2

Well I think so! I mean I am graphing. But the problem is solved
for y right

Answer 3

yes, its already solved for y

Answer 4

Let me just be honest I get to the problem and I see it and I think okay yeah so what do you want me to do with it?

Answer 5

If you are graphing it, it is a line with a slope of 3/2 and a y intercept of -1

Answer 6

I am currently learning to use a table of values intercepts and slopes to graph these

Answer 7

so then y=mx+b maybe

Answer 8

thats the equation of a line, so in this case m = 3/2 and b = -1

Answer 9

So then can you walk me through that maybe. I mean from beginning to end? Or else I won't get it!

Answer 10

And see I know the formulas but don't really know how to use them

Answer 11

Since it is a line, if you want to graph it you only need to know two points

Answer 12

Since your intercept is -1, your first point would be (0, -1)

Answer 13

to find a second point, plug in any value of x to find the corresponding y value

ex.
if x = 2 y=(3/2)(2) - 1 so y = 2 and your second point is (2, 2)

Answer 14

then draw a line through (0, -1) and (2, 2) and thats the graph of your function

Answer 15

That sort of seems familiar cause my instructor said to kill the fraction use the denominator or somehthing

Answer 16

yes, since the denominator is 2 if you plug in 2 for x, you get a nice number for y and not a fraction

Answer 17

Okay and of course you are right. I am working on my labs and I have a test on this tomorrow so do you agree with plugging in a number that per say kills off the fraction and I like nice numbers lol

Answer 18

Yes, while it doesn't really matter which values of x you plug in it is easier dealing with whole numbers

Answer 19

Yes it is lol You are a life saver thank you

Answer 20

OK so what do you say to something that isn't solving for y like y-5x=0

Answer 21

just solve it for y

y = 5x which is a line with slope 5 and intercept 0

Answer 22

Sorry I don't understand how is that is that according to the slope intercept form?

Answer 23

y = mx + b

so
when y = 5x
m = 5 and b = 0
so slope 5, intecept 0

Answer 24

Yeah it worked thanks again

Answer 25

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