exam Maths Puzzle Numerical Ability

What is the product of 3 and a number y that is no more than 21?

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exam Other Question

solve each of the following systems by using either addition or substitution. If a unique solution does not exist, state whether the system is dependent or inconsistent.
10x+2y=7
y=-5x+3
Write the equation of the line passing through each of the given pairs of points. Write your result in slope-intercept form, where possible.
(-1,3) and (4,-2)