## adajiamcneal one year ago algebra 2

2. Michele_Laino

in order to get the y-intercept, we have to set x=0 into your equation, so we get: -3*0-10 y=7 -10 y=7 now please solve for y

how would i do that? would i divide 7 into -10?

4. Michele_Laino

hint: |dw:1443461624375:dw|

5. Michele_Laino

what is y?

-3?

7. Michele_Laino

I got: $y = - \frac{7}{{10}}$

well yeah but would the slope be -3 / 10?

9. Michele_Laino

in order to get the slope, we have to rewrite your equation in slope-intercept form, so we have to do the subsequent steps: 1) I add 10 y to both sides so I get this: $\begin{gathered} - 3x - 10y + 10y = 7 + 10y \hfill \\ - 3x = 7 + 10y \hfill \\ \end{gathered}$

10. Michele_Laino

then I subtract 7 from both sides, so I get this: $\begin{gathered} - 3x - 7 = 7 + 10y - 7 \hfill \\ - 3x - 7 = 10y \hfill \\ \end{gathered}$

11. Michele_Laino

finally I divide both side by 10: |dw:1443462108270:dw|

wait so how do you divide the equation at the top with 10?

13. Michele_Laino

it is simple, we can write this: $y = - \frac{3}{{10}}x - \frac{7}{{10}}$

14. Michele_Laino

you are right, since the slope is the coefficient of x, which is: -3/10

Oh ok then i think i did it right :) thank you so much !! :) sop would the answer be A ?

16. Michele_Laino

that's right!

ok how can i rate you as a qualified helper haha

18. Michele_Laino

you have to click on the orange button "Rate a Qualified Helper" at the top, I think

oh duh... ok thanks again!

20. Michele_Laino

:)