Recent content by cir

  1. C

    Intersection point between a line with slope m and f(x)

    got it, thnks.
  2. C

    Intersection point between a line with slope m and f(x)

    @rl.bhat Thanks. Just saw the sign error. Now able to solve using factorization too. mx-m-15=2x2-5x-12 2x2-5x-mx+m+3=0 2x2-5x+3-m(x-1)=0 2x(x-1)-3(x-1)-m(x-1)=0 (2x-3-m)(x-1)=0 x = 1 ; x = (m+3)/2 y= -15 ; y = ((m2+m)/2)-15 intersecting points therefore: pt (1...
  3. C

    Intersection point between a line with slope m and f(x)

    Homework Statement f(x) = 2x2-5x-12 is given; part a: find derivative of f(x) using first principles, part b: find the rate of change of f(x) at x=1, part c: the points at which the line through (1, -15) with slope m cuts the graph of f(x), part d: the value of m such that the points of...