Question

Someone please help me. i wasted an hour trying to get 2 other questions and i am now behind. i need really quick answers now. so please just put the answer and then the explaination.

Identify the correct x intercept and y intercept of the equation x + 7y = -21.
x intercept = (3, 0); y intercept = (0, 21)
x intercept = (-3, 0); y intercept = (0, -21)
x intercept = (21, 0); y intercept = (0, 3)
x intercept = (-21, 0); y intercept = (0, -3)

Choose the equation of the line passing through the point (6, -2) and parallel to y = x + 7.
y = x + 8
y = x - 4
y = x + 4
y = x - 8

Choose

Answer 1

Choose the equation of the line passing through the point (-4, -2) and perpendicular to y = -x + 6.
y = -x + 6
y = x - 6
y = -x - 2
y = x + 2

Answer 2

can you show me your work ? ;)

Answer 3

uhm excuse me ?

Answer 4

nothing,,nevermind..

Answer 5

what ? i meant no attitude by that, i dont know what u mean ?

Answer 6

What's so confusing about these questions?

Answer 7

i dont know how to do them and i am in a real big hurry.

Answer 8

So, for the first one, rewrite the equation in slope intercept form. You have x + 7y = -21

Answer 9

x + 7y = -21
x-intercept : put y = 0 and calculate x + 0 = -21
y-intercept: put x = 0 and work out y

Answer 10

the x intercept is -21

Answer 11

@zordoloom i dont see that in the answer choices ????

Answer 12

* (-21, 0)

Answer 13

When you rewrite it , you get the y intercept at (0, -3) and the x at (-21,0)

Answer 14

y-intercept : when x = 0 is

x0 + 7y = -21
y = -3

thats (0,-3)

Answer 15

okay i got the first one. how bout the next one

Answer 16

and thank you both @cwrw238 @zordoloom for helping me !!

Answer 17

Use point slope form. Use the slope from the first equation, and plug in the point that is given (6, -2) into the equation

Answer 18

since the slope is just 1, it shouldn't be that complicated to write the equation.

Answer 19

plug in x=6 and y=-2 into each equation and see if they fit

eg try y = x + 4

-2 = 6 + 4
-2 = 10!!!!
- so its not that one

Answer 20

try the last one

Answer 21

y-(-2)=1(x-6), just rearrange it.

Answer 22

y=x-8

Answer 23

And for the last one, just use the inverse slope of the given equation to find the line that is perpendicular.

Answer 24

i think the last one is y = x + 2

Answer 25

dat right ?

Answer 26

I don't know.

Answer 27

idk who to give da best medal to ?

Answer 28

no - the last one is y = x - 8 - what zordoloom got.

Answer 29

i gave it to to zordollom already

Answer 30

oh - ok - i'll take a medal as well l lol!!

Answer 31

So for the third one, (y-(-2)=1(x-(-4))

Answer 32

So, ya the third one is correct y=x+2

Answer 33

okay haha thank u both sooooooo much !! u have no idea how much u helped :)