Question

Find the Slope of each line: y= -2/5 x -1 and 4x+10y=10.

Answer 1

use y = mx + b

Answer 2

m is you slope... look closly at the functions...

Answer 3

the first one s -2/5 for the second one make sure you ut it in its proper form, solve for y...

Answer 4

\[
\begin{align*}
y&=&-\frac{2}{5}&&x&+&(-1) \\
y&=&m&&x&+&b
\end{align*}
\]
See the similarities?

Answer 5

Where do you go from there? Just solve? But how?

Answer 6

You do not need to solve. The slope is equal to m.

Answer 7

So for the second slope.. Would you just do 10y=-4x+10?

Answer 8

Yes, but you need to divide the whole equation by 10 to get the slope (i.e. \(\frac{10}{10}y=\frac{-4}{10}x+\frac{10}{10}\) )

Answer 9

Making your slope -4/10?

Answer 10

Yes, as you must have y on one side to work, and don't forget to simplify it.

Answer 11

-2/5

Answer 12

Good!

Answer 13

So if you compare the two slopes both are -2/5 making them parellel?

Answer 14

Yes, but I didn't notice that. Great job!

Answer 15

Thank you so much!