1. Questions

Algebra

Find the equation of the line in stardard form (-5,-1) and (5,7)

I can get it to
7=8/5(5)+b
7=8+b
b=-1
but I can not figure it our from here

answer 8x-5y=-30

  1. 👍
  2. 👎
  3. 👁
Sarah

  1. looks like your slope is wrong
    slope = (7+1)/(5+5) = 8/10 = 4/5

    in
    y = mx + b, and using the point (5,7) it would be
    7 = (4/5)(5) + b
    b = 3

    so y = (4/5)x + 3

    clear the fraction by multiplying by 5

    5y = 4x + 15

    or 4x - 5y = -15 in standard form

    the answer you supply is not correct,
    (5,7) doesn't even satisfy that equation.

    5y = 8x -

    1. 👍
    2. 👎
    Reiny

Respond to this Question

First Name

Your Response

Similar Questions

  1. Math

    In an isosceles triangle, the perimeter is 8 more than 2 times on of the legs. If the perimeter is 28 in, find the length of the base. A. 16 in B. 18 in C. 10 in D. 8 in Given triangle ABC with A(-3, 2), B(-1, -4), and C(4, 1),

  2. Math(check)

    1)Find the range of the relation [(-1,4)},(2,5),(3,5)}.Then determine whether the relation is a funtion. 4,5,5 is the range 4,5 is a function 2)Find f(-1),if f(x)= x^2-6x/x+2 (-1)^2-6(-1)/-1+2 1+6/-1+2 7/1 =7 3)Find f(a),if f(t)=

  3. math

    The point-slope form of the equation of the line that passes through (–5, –1) and (10, –7) is y plus 7 equals negative StartFraction 2 over 5 EndFraction left-parenthesis x minus 10 right-parenthesis.. What is the standard

  4. Math

    1. Use point-slope form to write the equation of a line that has a slope of 2/3 and passes through (-3, -1). Write your final equation in slope-intercept form. 2. Write the equation in standard form using integers (no fractions or

  1. Algebra

    Please Check My Anwsers What is the slope of the line in the graph show below? /content/media/390571-1122011-42500-PM-1076804072.png A) -2 B) -1 C) 1 (My Choice) D) 2 Find the slope of a line that passes through (–2, –3) and

  2. Algebra

    Find an equation of a line perpendicular to the given line and contains the given point. Write the equation in slope-intercept form. a. line 3x+y=5, point (-1,2) b. line y=3x+1, point (6,1)

  3. Algebra

    For the data in the table, does y vary directly with x? If it does, write an equation for the direct variation. X Y 52 39 32 24 2o 15 8 6 Find the slope of the given lines: 2. (6, 5) & (9, 10) 3. (-2, -4) & (-2, -6) Write the

  4. math

    The graph of an equation in the form y=mx + b is a straight line. Can the equation of every straight line be written in the form y=mx + b (Hint: What is the equation of a vertical line?)

  1. algebra

    Find an equation for the line parallel to y=2x-7 with y-intercept(0,6). Write the answer in slope-intercept form. The equation of the line in slope-intercrpt form form is

  2. Algebra 1

    Im in Connexus and I need help with these chunky ones... 1. What is the slope of the line in the graph shown below? It shows a line going through (0, 3) and (1, 1) 2. Find the slope of a line that passes through (–2, –3) and

  3. mathematics

    The equation of a line given two points needs to be found. Samuel claims that slope-intercept form will generate the equation and Helena claims that point-slope form will find the equation. Who is correct? Explain your reason by

  4. calculus

    -find the equation of the tangent line to the curve y=5xcosx at the point (pi,-5pi) -the equation of this tangent line can be written in the form y=mx+b where m= and b= -what is the answer to m and b?

You can view more similar questions or ask a new question.