Q22 of 292 Page 564

Find the equation of the tangents to the curve , parallel to the line .

If tangent is parallel to the line x + 3y = 4 then it’s slope is -1/3.





x = 1 and -1


At x = 1, y = 2 and y = -2 (not possible)


At x = -1, y = -2 and y = 2 (not possible)


y – b = m(x – a)


At (1, 2)



3y + x = 7


At (-1, -2)



3y + x = -7


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