Question

Write an equation of a line in slope intercept form that is perpendicular to y = -4x -2 and passes through the point (-16, -11). is the answer y=4x+75?

Answer 1

please someone help

Answer 2

Immediately - No. If the slope is perpendicular to y = -4x - 2, the slope must be 1/4, not 4.

Answer 3

Perpendicular slopes, as long as one line is not vertical, multiply to -1. We have -4. This requires - 4 (1/4) = -1

Finally (y+11)=(¼)(x+16)

Answer 4

so it is written like this -11=1/4(x--16)

Answer 5

Not quite. You're missing the 'y-' in the front.

Answer 6

so y--11=1/4(x--16) which comes out to be y+11=1/4(x+16) which comes out to be y+11=1/4x+4.25 am i on the right path

Answer 7

and the answer would be y=1/4x-6.75

Answer 8

(1/4)*16 = 4

Answer 9

ok i missed a step it would equal y=1/4x+15 i am sorry that i am not picking this up right away.

Answer 10

You can do it. Slow down and think it through. Your hand wants to go faster than your brain. It is not uncommon. :-) You'll get it with a little patience.

Answer 11

ok when i do this function 1/4 (x--16) in my calculator the answer i get is 17/4 or 4.25 is that right

Answer 12

Must be something funny about how it is interpreting the "--". Use "+" there, instead.

For the future, you may want NEVER to write "--" again. Always write "+" for that. "--" is quite confusing.

Answer 13

ok

Answer 14

Maybe 'x' has the value '1' for some reason. And thus we see why the brain remains of more valuable than the calculator.

Answer 15

still get 4.25 and i did 1/4(x+16)

Answer 16

ow ok thank you for that comment

Answer 17

so the right answer would be y=1/4x+15

Answer 18

Almost. 4 - 11, not 4 + 11. Careful with your algebra. The notation should help you. Be consistent. Don't be afraid to rewrite the WHOLE equation as many times as necessary. Make sure your can follow your tracks.

Answer 19

no that would not be the right answer it would be y=1/4x-7
cause you subtract 11 not add 11

Answer 20

NOW we're talking! Good work.

Answer 21

thank you
so the answer for this question, Write the equation of a line in slope intercept form that passes through (2, 4) and (5, 4) would be y=x+4

Answer 22

tk hunny are you still there

Answer 23

Not sure just by looking at it. What does the algebra say?

(2,4)
(5,4)

Whoops! I notice something right off. The y-coordinates are the same!

y = 4 Done!

Answer 24

the question is Write the equation of a line in slope intercept form that passes through (2, 4) and (5, 4) and my answer to this question is y=x+4 or is the answer y=4

Answer 25

Try the two points in your equation. Neither one works. I don't know how you got that equation, but it is not particularly related to the two given points.

Answer 26

\[4-4\div5-2=0/3 \] so m=0 and you would find b by doing 4=0(2)=b and you would get 4=0 so be would equal 4 so then you would put it into the formula y=mx+b and that would look like y=4 because their is no slope so their would be no x.
does this look right to you

Answer 27

i think i just solved my own problem

Answer 28

You do have to be careful with vertica and horizontal lines.

y = mx + b

When m = 0, it look s a little odd. y = b. This is a horizontal line.
Vertical lines are worse, x = p, where p is the x-intercept that we're not used to seeing.

Answer 29

ok so is y=4 the correct answer and thank you sooo much for all the help that you are giving me it helps tremendously

Answer 30

You are very welcome.

Answer 31

can i run another answer by you to check to see if it is right

Answer 32

write an equation of a line in slope intercept form that has a slope of -3/4 and passes through the point (4,5). Is the answer y=3/4+8?

Answer 33

my work is 5=-3/4(4)=b
which would equal 5=-3 plus three on both sides and you get eight and the slope is the reciprocal of -3/4 so it would be y=4/3x+8

Answer 34

Let's see

(y-5)=-¾(x-4)

y - 5 = -¾x + 3

y = -¾x + 8

1) You lost your 'x'. That has to be just carelessness. Be more careful.
2) We started with -¾. How did yours switch to +¾?

You're close. A little more caution.

Answer 35

so the answer is Y=-3/4x+8

Answer 36

the 'x' and 'y' are part of the equation. You cannot just ignore them and magically put them back in at the end.

Answer 37

ok

Answer 38

so it would be y-5=-3/4(x-4) which would then equal y=-3/4x+8

Answer 39

i see how you got that answer thank you

Answer 40

That's it. :-) I'm out.

Answer 41

ok thank you