Question

What is the value of the function at x=−2

https://gyazo.com/a6b7b67451f7ccfd0d22eb63c9dc804e

Answer 1

There are two ways that you can do this:
(1) Look at the graph and then match out where the line crosses x=-2.
(2) For an accurate result, write out the equation of the line and then substitute -2 for where x is.

Answer 2

what's the equation of the line?

Answer 3

Do you know the slope-intercept form, point-slope form, standard form, etc?

Answer 4

mx + b is slope right?

Answer 5

slope-intercept

Answer 6

i dont know the other ones

Answer 7

Slope-intercept form will work. And yes, it is y=mx+b.

Answer 8

I, first, suggest for you to pick out two points (coordinates with whole numbers) that are on the line. Using that, find the slope:
\[m = \frac{ y_2 - y_1 }{ x_2 - x_1 }\]

Answer 9

im confused

Answer 10

Where are you confused at?

Answer 11

If you are not able to tell me where exactly you are confused at, I will not be able to explain this concept properly to you. I need your full cooperation.

Answer 12

sorry!

Answer 13

I don't understand how to put it on that thing. like i think it crosses at y 1 and x 1

Answer 14

@calculusxy

Answer 15

@AloneS