exam Maths Puzzle Numerical Ability

Find the equation of the line through (4,3) perpendicular to the line 3x + y =7
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exam Other Question

If leah is 6 years older than her sister,Sue, and John is 5 years older than Leah, and the total of their ages is 41. Then how old is sue? Graph function and state range and domain.

y=0.3x