Set 10: Linear Functions

Choice A is correct. Choice A is the correct answer. Set $x=0$. 1. Substitute: $4(0) + 5 y = 20 \rightarrow 5 y = 20$. 2. Solve: $y = 4$. Strategic Tip: In Standard Form $Ax+By=C$, the y-intercept is $C/B$. Choice B is incorrect because it is the x-intercept ($20 /4$). Choice C is incorrect because sign error. Choice D is incorrect because it results from an error in the solution process.