Question

@precal can you help me plot three points from a few linear equations ? its difficult because I need to find whole numbers for the points...
the first linear equation I have to plot is
-3y=5x-7

Answer 1

just divide -3 to both sides and what do you get?

Answer 2

do I divide 5x by -3y? or -7 ?

Answer 3

yes the whole right side and left side, what do you get?

Answer 4

I don't get it ..

Answer 5

the whole point is to get this equation into what we call point-slope form or just isolate y by itself. This will help you quickly graph the equation and find points from the line.

Answer 6

can you help me get the first point ?

Answer 7

let's rewrite the equation first, there is much to learn by doing this: I have a purpose to what I am teaching you. Remember you asked for my help. I am here to help.

Answer 8

im so confused ...

Answer 9

ok let's take another approach, if you just want three points just sub any value into your equation

Answer 10

-3y=5x-7
let's just pick any points shall we

Answer 11

if x=0 what is y?

Answer 12

I tried plugging in 0 for x.. did I mention I need whole numbers ? I cant use fractions or decimals in the points.. because its an online course..

Answer 13

-3y=5x-7
-3y=5(0)-7
-3y=-7
y=7/3
ok here is your first point (0, 7/3)

Answer 14

really fractions and decimals should not matter, even on an online course.....this is math we are not restricted to whole numbers only

Answer 15

if you just want whole numbers, use a graphing calculator and look up the values in the table.

Answer 16

it matters in this online course.. sadly the graph wont let me plot in between numbers..

Answer 17

no there are actually whole numbers on this line, don't you have a graphing calculator?

Answer 18

no I do not..