## iwanttogotostanford one year ago ACT MATH PREP Q: What is the slope-intercept for of 8x-y-6=0???

1. iwanttogotostanford

@Musicdude @

2. anonymous

so to get slope intercept you have to isolate y

3. jdoe0001

hmmm if you solve that for "y", what does it look like?

4. anonymous

so add 6 to the other side subtract 8x then change the signs because you divide by -1

5. anonymous

thats all

6. iwanttogotostanford

i got y=8x+6 I already know the answer, I just need to know how to do it not the answer

7. jdoe0001

8. jdoe0001

but that's quite close

9. anonymous

yea

10. anonymous

y=8x-6

11. anonymous

the way you do this is by trying to get it to slope-intercept form which is y=mx+b

12. jdoe0001

$$8x-y-6=0\implies \begin{array}{llll} {\color{brown}{ 8}} x&-{\color{blue}{ 6}}=y\\ \uparrow &\uparrow \\ {\color{brown}{ slope}}&{\color{blue}{ y-intercept}} \end{array}\impliedby slope-intercept\ form$$

13. iwanttogotostanford

ok, thanks

14. anonymous

np

15. jdoe0001

well... actaullly includes the negative, so $$8x-y-6=0\implies \begin{array}{llll} {\color{brown}{ 8}} x&{\color{blue}{- 6}}=y\\ \uparrow &\uparrow \\ {\color{brown}{ slope}}&{\color{blue}{ y-intercept}} \end{array}\impliedby slope-intercept\ form$$