Algebra

posted by .

Is there anybody out there that can give me the answer to this problem I have tried but I can't get it. I really need to turn in my work. Thank you (4,-8); 2x+5y=4

  • Algebra -

    You didn't state your problem.

    Are you finding a new equation
    parallel to the given line ?
    perpendicular to the given line ?
    ??

  • Algebra -

    2x + 5y = 4
    Add -2x to both sides
    5y = -2x + 4
    divide both sides by 5
    y = -2/5 y + 4/5
    So, slope m = -2/5

    Perpendicular lines, the slopes are negative reciprocals of each other.
    Slope = -2/5
    m1 * m2 = -1
    -2/5 * m2 = -1
    m2 = -1/(-2/5)
    m2 = 5/2

    Now you have to find b, for the equation of the perpendicular line.
    y = mx + b
    m = 5/2
    y = 5/2 x + b
    P(4, -8)
    -8 = 5/2 (4) + b
    -8 = 20/2 + b
    -8 = 10 + b
    -18 = b

    y = 5/2 x + b
    y = 5/2 + -18
    y = 5/2 - 18

    Follow these exact steps.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Algebra

    I am in need of assistance with the following problem: v-4(4-v) = -2(2v-1) I don't want an answer I will work the problem myself I just need some one to assist me with the detailed rule or formula to work the problem. I have been on …
  2. algebra

    i have two answers to this problem so am not sure which way I need to do in or should say the order i should do it. lease help?
  3. algebra

    I have tried to work these problem and seem to do it wrong.I need help. 3/4(5x-1/2)-5/3<1/3 could help me please. 6y+2y<-24= y=-3 is this right.
  4. Algebra-I really need help, please?

    I have to solve sqrt(2x-7) >=5 answers would be x>=16 x>=7/2 7/2<=x<=16 x<=16 I don't get this concept at all and I have 20 of these kinds of problems for homeowrk-can someone direct me how to start or give me an …
  5. math help

    Thank you for helping me with the last problem Reiny and Bosnian. However, I have one more problem that I need help with please and I have no idea how work the problem. I used an on line calculator to get the answer. It didn't give …
  6. chemistry

    This question I really don't get it. I tried tried tried to figure out how to start solve the problem but still couldn't figure out. So can you help me with one question PLEASE?
  7. Math

    Can you please help me with this? I don't really understand it. Q: 5(x+10)+x A. 6x + 15 B. 5x + 15 C. 6x + 50 D. 4x - 50 I tried to work out the problem and I came out with A. Am I right?
  8. English

    How would I answer this? I am so sorry, but I just can't afford to have you finish the job. My largest wholesaler just went out of business and I don't know what to do. That was my biggest client, so I am not sure if I can afford to
  9. Algebra

    I seriously need help on this math problem. I have tried to work it out myself but the answer is not coming out right. Select the approximate values of x that are solutions to f(x) = 0, where f(x) = -8x2 + 3x + 7.
  10. Math, Algebra

    So I've tried for two days to figure out this problem. I tried to ask my friend to help me but she just won't. My parents don't know anything about math, they said so themselves. The first day I tried I cried I got so frustrated. The …

More Similar Questions