Answer:
y = -3/4x -15/4
Step-by-step explanation:
We assume you mean the given line to be ...
y = -3/4x -21/4
The slope of this line is -3/4. The parallel line will have the same slope.
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In point-slope form the equation of the line you seek is ...
y -k = m(x -h) . . . . . . line with slope m through point (h, k)
y = -3/4(x -(-5)) . . . . .substitute m=-3/4 and (h, k) = (-5, 0)
y = -3/4x -15/4