Find the greatest common factors: 1) 16p4+4p32) 9x+363) 63+45b4) 6n3-3n55)-6r5-6r46) 63x12-35x67) 14a+21a2+21a38) 10n3-9n2+n9) -28v2-8v-3610) -8x7+24x6+12x511) 20-35n2-20n312) 9x6-63x3-90x213)-3k3+15k2-6k14) 50p3+50p2-2015) 32n3+28n-2016)-90x5+100x+6017) 3m2+9m+2718) 12r2+4r-12

Which statements are true? check all that apply. the line x = 0 is perpendicular to the line y = –3. all lines that are parallel to the y-axis are vertical lines. all lines that are perpendicular to the x-axis have a slope of 0. the equation of the line parallel to the x-axis that passes through the point (2, –6) is x = 2. the equation of the line perpendicular to the y-axis that passes through the point (–5, 1) is y = 1.