Question

need quick help!

Answer 1

Write the slope-intercept form of the given line. Include your work in your final answer.

Answer 2

There are a few things to keep in mind, y intercept and the slope, how many units you go up or down, over how many units you go left or right. In this graph, we are falling 3 units and moving to the right two units, so the slope would be what??

Answer 3

y intercept is where the line crosses the y axis, if it is a positive number, you add it to the equation, if it crosses at a negative number, you subtract it from the equation

Answer 4

Obviously you need to find the slope and the y-intercept. The coordinates of the y-intercept are readily found in the graph. Find the slope of this line. One of the easier ways in which to do this would be to choose as two points on the line the y-intercept and the x-intercept. Do you know the formula for slope?

Answer 5

m= y2 - y1 / x2- x1

Answer 6

that's one way, yes. Pick two points on your line for this method. and type the points when your done

Answer 7

i cant tell which points

Answer 8

Your choice of points is arbitrary. You can pick any two points you want.

Answer 9

they can be any points as long as they are on that line, it would be easier though if you picked points that are rational and don't go into decimals.

Answer 10

-2, -3

Answer 11

A few minutes ago, I suggested that you choose as your two points the x-intercept and the y-intercept of this line. Look where the line crosses the y-axis. What's the x-value there? the y-value?

Answer 12

the intercepts are where your line touches the x axis and y axis

Answer 13

you guys can pick any you want

Answer 14

oops, I typed that wrong, it should be (0,-3) and (-2,0)

Answer 15

\[\frac{ -3 }{ 2 }\]

Answer 16

there you go, now where does the line cross the y axis??

Answer 17

-3 ?

Answer 18

great, that is the y intercept, now to put it together

Answer 19

y=mx+b b is the y intercept, m is your slope. can you substitute those in for me?

Answer 20

whats the slope?

Answer 21

your slop was determined by y2-y1/x2-x1 remember? We found that our slope was -3/2

Answer 22

okay so y= -3/2x+-3

Answer 23

So close! when you add a negative number, it is the same as subtracting. so +-3 turns into what?

Answer 24

y= -3/2x+3

Answer 25

no, it turns into subtraction, not addition, +-3 would be the same as subtracting 3. -3

Answer 26

y=-3/2x-3 ?

Answer 27

you got it :D

Answer 28

can you help me with 3 more?

Answer 29

yeah, sure.

Answer 30

want me to open the new question so you can get your medal?

Answer 31

so for it :3

Answer 32

go for it*