Question

Given the linear equation x + y = 5, find the slope of its graph.



A.


–5


B.


–1


C.
1


D.
5
@zeinas.

Answer 1

Hello again!

Answer 2

Hi :). So let's put this in slope intercept form. That is y=mx+b.
To do that, we need to put the x on the other side. Subtract x from both sides. What do you get?

Answer 3

Um so how do I do that I subtract 5?

Answer 4

You do it like this:
x+y=5
Now subtract x from both sides
-x+x+y=-x+5
Negative x and positive x cancel out. So what are you left with?

Answer 5

y=5?

Answer 6

wait y+5m+b?

Answer 7

I meant y=5m+b

Answer 8

Don't forget about the -x on the right side. So y=-x+5. Got that part?

Answer 9

Oh yeah ok then what?

Answer 10

It is now in slope intercept form. y=mx+b,
where m is the slope,
and b is the y intercept.
In our case, 5 is b,
and m is -1(when you have -x, that is the same as -1x).

Answer 11

Hang on give me a sec

Answer 12

The trick is to divide your coefficients. The slope would be 1.

Answer 13

No it's not. The slope is -1.

Answer 14

How is it -1?

Answer 15

Sure about that?

Answer 16

oh ok I get it now thanks I dont get how it would be 1 butI'll go with -1

Answer 17

You're right... it's -A/B, therefore it would be -1/1, which would be -1.

Answer 18

Np @British_am_I . Do you need help with anything else?

Answer 19

Yeah I do can I tag you again?

Answer 20

Your amazing help!!!!