exam
Maths Puzzle
Numerical Ability
Can anyone help with this?
A line passes through the point (-4,-9) and has a slope of -3 . Write an equation for this line in x,y -coordinates.
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exam Other Question
A clerk was asked to change a $10 bill. She returned 9 more dimes than nickels and 21 more quarters than dimes. How many of coins of each did she return?
please help me understand:
explain how to apply substitution in solving a system of equations.
Thank you.