Hello!
Slopes of perpendicular lines are opposite reciprocals of each other, which the slope of line perpendicular to a line with a slope of 7/8 is -8/7.
Answer:
D. -8/7
Hope this helps!
Answer:
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Step-by-step explanation:
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A’s answer is 7
b’s answer is 5
hope this helps!
Answer:
Step-by-step explanation:
![2y+18x=2x\left(x+9\right)\\Parabola\:standard\:equation\\4p\left(yk\right)=\left(xh\right)^2\:\mathrm{\:is\:the\:standard\:equation\:for\:an\:up-down\:facing\:parabola\:with\:vertex\:at}\:\left(h,\:k\right), \\\mathrm{and\:a\:focal\:length\:}\:|p|\\\mathrm{Rewrite}\:2y+18x=2x\left(x+9\right)\:\mathrm{in\:the\:standard\:form}\\2y+18x=2x\left(x+9\right)\\\mathrm{Rewrite\:as}\\2y=2x\left(x+9\right)-18x\\\mathrm{Divide\:by}\:2\\y=x^2\\\mathrm{Rewrite\:in\:standard\:form}](https://tex.z-dn.net/?f=2y%2B18x%3D2x%5Cleft%28x%2B9%5Cright%29%5C%5CParabola%5C%3Astandard%5C%3Aequation%5C%5C4p%5Cleft%28yk%5Cright%29%3D%5Cleft%28xh%5Cright%29%5E2%5C%3A%5Cmathrm%7B%5C%3Ais%5C%3Athe%5C%3Astandard%5C%3Aequation%5C%3Afor%5C%3Aan%5C%3Aup-down%5C%3Afacing%5C%3Aparabola%5C%3Awith%5C%3Avertex%5C%3Aat%7D%5C%3A%5Cleft%28h%2C%5C%3Ak%5Cright%29%2C%20%5C%5C%5Cmathrm%7Band%5C%3Aa%5C%3Afocal%5C%3Alength%5C%3A%7D%5C%3A%7Cp%7C%5C%5C%5Cmathrm%7BRewrite%7D%5C%3A2y%2B18x%3D2x%5Cleft%28x%2B9%5Cright%29%5C%3A%5Cmathrm%7Bin%5C%3Athe%5C%3Astandard%5C%3Aform%7D%5C%5C2y%2B18x%3D2x%5Cleft%28x%2B9%5Cright%29%5C%5C%5Cmathrm%7BRewrite%5C%3Aas%7D%5C%5C2y%3D2x%5Cleft%28x%2B9%5Cright%29-18x%5C%5C%5Cmathrm%7BDivide%5C%3Aby%7D%5C%3A2%5C%5Cy%3Dx%5E2%5C%5C%5Cmathrm%7BRewrite%5C%3Ain%5C%3Astandard%5C%3Aform%7D)
![4\cdot \frac{1}{4}\left(y-0\right)=\left(x-0\right)^2\\Therefore\:parabola\:properties\:are:\\\left(h,\:k\right)=\left(0,\:0\right),\:p=\frac{1}{4}](https://tex.z-dn.net/?f=4%5Ccdot%20%5Cfrac%7B1%7D%7B4%7D%5Cleft%28y-0%5Cright%29%3D%5Cleft%28x-0%5Cright%29%5E2%5C%5CTherefore%5C%3Aparabola%5C%3Aproperties%5C%3Aare%3A%5C%5C%5Cleft%28h%2C%5C%3Ak%5Cright%29%3D%5Cleft%280%2C%5C%3A0%5Cright%29%2C%5C%3Ap%3D%5Cfrac%7B1%7D%7B4%7D)