Answer:
Ø
Step-by-step explanation:
Anything that is set to equal <em>x</em><em> </em>is what is known as an undefined <em>rate</em><em> </em><em>of</em><em> </em><em>change</em><em> </em>[<em>slope</em>] because it is a <em>vertical line</em><em>.</em>
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-8 and 30 top from bottom
35 is 15 higher then 20, implement that into all of them
40
why? because 40x40=1600
