Question

Complete the equation of the graphed linear function. Write the slope in decimal form.


y=___x+___

http://static.k12.com/calms_media/media/1522000_1522500/1522149/1/04dbe2757ad7cd03c5d5690457065f810152c1f8/MS_IMC-140829-100651.jpg

Answer 1

@austin_sunshine

Answer 2

@Michele_Laino

Answer 3

here we have to determine two coefficients, say a, and b, such that:
y=a*x+b

Answer 4

In doing that, I can use your intercepts, namely, if I set x=0, and y=4
I get:
4=b
whereas, if I set y=0, and x=-5, I get:
0=-5a+b
so we have to solve this system:
\[\Large \left\{ \begin{gathered}
4 = b \hfill \\
0 = - 5a + b \hfill \\
\end{gathered} \right.\]
what do you get?

Answer 5

i would solve for a right?

Answer 6

yes!

Answer 7

okay i think it would be 4/5

Answer 8

that's right! So what is your equation?

Answer 9

y=4/5x+4 but it wont let me put "4/5" in my equation in my answer

Answer 10

i knew that

Answer 11

ok!