<p>Need help answering this question >_> i forgot all about slope to standard and blah
Could anybody offer explanations to how one would get the answer: D in this?</p>
<p>Because I only come upon to y=-2/3x+2</p>
<p>oh and a brief explanation for #8 on the same page! thanks</p>
<p>5)To find the x-intercept just subsitute y with a zero.
To find the y-intercept just subisture x with a zero.
Use backsolving.</p>
<p>8)The question is asking how many y values are equal to zero between 0 and 12.Well, you only have a portion of the graph(where you have 4 y values that are equal to zero) ,but they told you that the graph is repeating each 5 steps in the x-axis.How did I know? It says f(x+5)=f(x)
Which means that f(0)=f(5) and f(1)=f(6) </p>
<p>I am pretty sure that my explanation seems illogical.</p>
<p>Btw,just write the question on google and you will get the answer instantly or ask Dr.steve in his thread(Sat Math Problems).</p>
<p>Thanks for explaining the first one! The 2nd one is still a bit confusing to me… Yeah I’ll ask Dr. Steve. I’ve seen him around and he seems REALLY helpful</p>