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ZX-8A780AAC19Linear functions · 第 5 题
Linear functions · 原库模块 1 · Q5 原库参考解析
The functions f and g are defined as \( f\left(x\right)=\frac{1}{4}x-9 \) and \( g\left(x\right)=\frac{3}{4}x+21 \). If the function h is defined as h(x) = f(x) + g(x) , what is the x-coordinate of the x-intercept of the graph of y = h(x) in the xy-plane?
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