Question

MEDAL + FAN !!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

@igreen

Answer 2

@mathstudent55

Answer 3

@mathmate

Answer 4

@is3535

Answer 5

...

Answer 6

Do you know the slope-intercept form of the equation of a line?

\(y = mx + b\)

Answer 7

yes i recognize that

Answer 8

That is above the figure you provided.
The b part is where the line crosses the y-axis. That is called the y-intercept.
Look in the given graph. At what point on the y-axis does the line cross the y-axis?

Answer 9

110

Answer 10

Great. We no have that b = 110, and we have this much:

\(y = mx + 110\)

Now we need to find m, the slope.

Answer 11

ok

Answer 12

To find the slope, you can use two points of the line.
Pick two points that are easy to read on your graph.
That means, pick two points that are on intersections of the grid lines.
Can you read two points?

Answer 13

yes i can

Answer 14

One point can be the one that includes y = 110.

Answer 15

(10,110) ?

Answer 16

Close. It's (0, 110).
Since it's on the y-axis, the x-coordinate is 0.
(0, 110) is a good point.
Now we need another one.

Answer 17

see i was going to say 0 but i thought it wouldn't count since 0 is the orgin

Answer 18

but it makes since since (0,110) = 110

Answer 19

my next one is (10,90)

Answer 20

also i just realized that 10,110 is not on the line anyway , lal

Answer 21

You get to the point we are talking about, (0, 110), by starting at the origin. You go 0 right or left. That is why the x-coordinate is 0.
Then you go 110 up. That makes the y-coordinate 110.
The point is (0, 110)
That means start at the origin, go 0 right or left (you're still at the origin), then go up 110. You end up at the point 110 on the y-axis.

Answer 22

exactly ^

Answer 23

Yes, (10, 90) is a good point because it's easy to read since it falls on the grid lines.
Another easy point would be (20, 70).

Ok, let's use (0, 110) and (10, 90)

Answer 24

ok



now whet?

Answer 25

We need to find the slope of the line that has those two points.

The way to find the slope is subtract the two y-coordinates.
Then subtract the two x-coordinates.
Divide the first difference by the second difference.

Answer 26

like x^1 - x^2

y^1 - y^2