exam Maths Puzzle Numerical Ability

i need help with this problem: Write the equation of the line slope-intercept the line that is perpendicular to y=(-5/3)x-2 and passes through (-3, -3).

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exam Other Question

Tim went to buy a car and found the prices depreciates in value.The following table shows the average price of the car based on the year of the car.
Age of car(in years)---New , 1 when doing this problem can you use the cross multiply method or do you use the LCM/LCD method. I tried to do the cross mulitply method but the answer did not turn out right.....Can you help