



 
Hi Hanna, I am not sure what your text means by "standard form" but I am going to use the slopeintercept form $y = mx + b$ where $m$ is the slope and $b$ is the yintercept. You know that the yintercept is 4 so the equation of the line is $y = mx + 4$ and all you need to determine is the slope. Since the given line $y = 5x + 1$ is also in slopeintercept form you know its slope is 5. The fact you need to complete the problem is that if two lines with slopes $m$ and $n$ are perpendicular then $m = \large \frac{1}{n}.$ Penny  


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