wotz rong???? yu dont no how tu put dots on graf paper????
rite...x^2+8x+15=0 be a parabola
it help tu get the zeroes...x=-3 & -5...thats weer kerv go thru x-axis
Sins kerv go up, yuno kerv go down belo 0 at left side....at x=-5
also help...dy/dx=2x+8 & set it =0 tu find bottom av kerv...at x=-4
lo spot...(-4,-1)