Kenneth S. answered 04/18/16
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Expert Help in Algebra/Trig/(Pre)calculus to Guarantee Success in 2018
y = mx + b and they've told you that m = 4.
Substitute (-3,5) in for x & y, respectively; this gives you an equation in which b is the only remaining letter, so solve for b.
Now you have all the parts.
Or, use the point slope form: y - 5 = 4(x -(-3)), and simplify, presenting answer in the form of y = expression...