Question

algebra 2

Answer 1

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

Answer 2

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

Answer 3

hint:

Answer 4

what is y?

Answer 5

-3?

Answer 6

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

Answer 7

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

Answer 8

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:
\[\begin{gathered}
- 3x - 10y + 10y = 7 + 10y \hfill \\
- 3x = 7 + 10y \hfill \\
\end{gathered} \]

Answer 9

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

Answer 10

finally I divide both side by 10:

Answer 11

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

Answer 12

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

Answer 13

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

Answer 14

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

Answer 15

that's right!

Answer 16

ok how can i rate you as a qualified helper haha

Answer 17

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

Answer 18

oh duh... ok thanks again!

Answer 19

:)