Since it's proportional (it's a straight line), B and C are automatically wrong. A would seem true at first glance, <u>BUT </u>if you look closely at the graph, the slope of the graph is actually 2x.
Look at the beginning of the line. It starts at 18 (x = 0/y intercept) and at x = 1, you can see that y is at 16. The y value goes down by 2 every time x increases by 1. This means that the equation of the graph is -2x + 18 = y.
The graph is proportional and has an equation of y = -2x + 18. This means that A, B and C are incorrect.
It is a straight line also known as <u><em>proportional</em></u>. The first impression, <em><u>A</u></em> appears to be accurate, but closer inspection reveals that the graph's slope is actually <em><u>2x. 18 (x = 0/y intercept) and ends at x = 1, where little y is at 16.</u></em> Any time <em><u>x expands by one, the y value falls by two</u></em>. This says that the <em><u>graph's equation</u></em> is <em><u>-2x + 18 = y.</u></em>
