a) Identify terms which contain {tex}x{/tex} and give the coefficient of {tex}x.{/tex}

(i) {tex}{y^2}x + y{/tex}

(ii) {tex}13{y^2} – 8yx{/tex}

(iii) {tex}x + y + 2{/tex}

(iv) {tex}5 + z + zx{/tex}

(v) {tex}1 + x + xy{/tex}

(vi) {tex}12x{y^2} + 25{/tex}

(vii) {tex}7x + x{y^2}{/tex}

(b) Identify terms which contain {tex}{y^2}{/tex} and give the coefficient of {tex}{y^2}.{/tex}

(i) {tex}8 – x{y^2}{/tex}

(ii) {tex}5{y^2} + 7x{/tex}

(iii) {tex}2{x^2}y – 15x{y^2} + 7{y^2}{/tex}