Question

Write an equation of the line with the given slope and y-intercept

slope: ,y-intercept: –9


a.y = x– 9
b.y = x – 9
c.y = x – 9
d.y = x+ 9

Answer 1

@KamiBug

Answer 2

I can see from the choices that the slope is 1.

So, let's rephrase your question

\(\color{red}{Write~~~~an~~~~equation~~~~of~~~~the ~~~~line~~~~ with ~~~~the~~~~ given~~~~ slope ~~~~and }\)
\(\color{red}{y-intercept. }\)
\(\color{blue}{slope :~ 1~~~~~~~~~~~~~~y-intercept:~~9 }\)

the form is \(\color{blue}{y=mx+b }\)
where m is the slope and b is the y-intercept
plug the numbers in
\(\color{red}{y=\color{blue}{1}~~ x+\color{blue}{-9}}\)
simplify that, and you get
\[\color{blue}{y=x-9}\]

Answer 3

I made a typo y-intercept is -9, sorry :)

Answer 4

@SolomonZelman
slope: 1.6, y-intercept: 7.5



a.

y = 1.6x – 7.5

c.

y = 1.6x + 7.5


b.

y = 646-06-03-00-00_files/i0150000.jpgx + 7.5

d.

y = –1.6x + 7.5

Answer 5

plug them in

y= (1.6)x+(7.5) and that's the same as, y=1.6x+7.5

Answer 6

So sorry I'm late! I was trying to come but my computer hates me. Anyways, @SolomonZelman is correct in both cases! It's just all about substitution! =)
I promise next time I'll try to be here asap, LOL!!! xD
Okk, sorry.