exam Maths Puzzle Numerical Ability

Write the equation of the line that passes through point (-4, -17)
with a slope of 3.

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exam Other Question
logx= 4.52
 find values for m and b in the following system so that the solution to the system is (-3,4)

5x+7y=b
mx+y=22


5(-3)+7(4)=13
-6(-3)+4=22

Is this all the steps or am I missing something?