Question

how do I find the y and x intercepts?
"y= -2x +1"

Answer 1

just use the replace and solve method.

Replace y with 0, solve for x. : x intercept.

Replace x with 0, solve for y : y-intercept

Answer 2

let me try it

Answer 3

y= -2x +1
0= -2x + 1
-1 -1
-1 = -2x

Answer 4

The problem is I don't know what to do once I am at this part...

Answer 5

in order to isolate x, we have to divide both sides by -2

Answer 6

agreed with Jhannybean

-2x means "-2 times x"

so if we had -2x = -1, and we wanted to isolate x, we undo the multiplication of the -2

the opposite of multiplication is division. You must divide both sides by -2 to isolate x

Answer 7

You first have to divide -2x by both sides so you would end up with y= x + -2

Answer 8

so x + 0.5?

Answer 9

I think you meant `x = 0.5` ?

Answer 10

oops I mean x = 0.5

Answer 11

correct. That or x = 1/2 which is the same thing in different form

Answer 12

thanks

Answer 13

@Jhannybean why do that? You stated above that y = 0. That's what led to x = 0.5

Don't you mean plug in x = 0 ?

Answer 14

so I plot one on (0.5,0) and another on (0,1) ?

Answer 15

That's true...i thought you could do either or. inputting it into my calculator i realize that it isn't possible.

Answer 16

was what I put correct?

Answer 17

`so I plot one on (0.5,0) and another on (0,1) ?`

correct @Amineh0923

now draw a straight line through those points

Answer 18

@jim_thompson5910 thanks

Answer 19

no problem