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Math Help - Help me please

  1. #1
    meachee
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    Lightbulb Help me please

    Hey I'm New to this so here whe go i'm in Pre Ib and i'm in Algerbra 2 honors and i need help with graphing equations using y=mx+b
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  2. #2
    Math Engineering Student
    Krizalid's Avatar
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    That's the line in principal form, where m is the slope, and b where the line intersects to the "y" axis.

    Give problems, would be easier to help ya.

    P.S.: reduce the size!
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  3. #3
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by meachee View Post
    Hey I'm New to this so here whe go i'm in Pre Ib and i'm in Algerbra 2 honors and i need help with graphing equations using y=mx+b
    what's with the huge font?

    to graph a line, you only need two points (many professors will make you plot several points, but this is not necessary). the easiest (and usually more efficient) points to plot are the intercepts.

    in the formula y = mx + b, m is the slope and b is the y-intercept. the y-intercept lies on the y-axis. so you can put a point on the y-axis at the value b.

    next we plot the x-intercept. for the x-intercept, we solve for x when y = 0

    so we have 0 = mx + b, so x = -b/m. so we can plot that point on the x-axis.

    finally, draw a line between the two points and you're done
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  4. #4
    TyRayCooper
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    Hey Im In School And The Problem Is Simplify
    -6(3-d)
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  5. #5
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by TyRayCooper View Post
    Hey Im In School And The Problem Is Simplify
    -6(3-d)
    you should post your question in your own new thread.

    they want us to simplify here, to do that we must expand. we do this by taking the term on the out side of the brackets and multiplying each of the terms inside the brackets.

    -6(3 - d) = (-6)(3) - (6)(-d) = -18 + 6d = 6d - 18
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