<span>1) The expanded form of a number is the split of the number using every digit muliplied by its place value. </span><span />
<span>2) The first (left most) digit of the given number is 1. It is in the hundred millions place. So, it represents 100,000,000 which is the first number in the expanded form. </span><span />
<span>3) The second digit (from lef to right) is 0, so its value is 0, and you do not include it in the expanded form. </span><span />
<span>4) The third digit (from the left to the right) is 3. It is in the place of the millions, so its value is 3,000,000. </span><span />
<span>5) Next number from the left is 7 and it is in the hundred thousands place, so its value is 700,000. </span><span />
<span>6) Next is 2, in the ten thounsands place => 20,000 </span><span />
<span>7) Next is 7 in the thousands => 7,000 </span><span />
<span>8) 4 in the hundreds => 400 </span><span />
<span>9) 9 in the tens => 90
</span><span>10) Finally 5 in the ones => 5.</span> <span /><span> </span><span>Then number the number is: 100,000,000 + 3,000,000 + 700,000 + 20,000 + 7,000 + 400 + 90 + 5</span>
The ordered pairs are (1,-1) (1,-2) (2,-3) (2,-4).
This is not a function because in order to be a function, every x value needs to have one and only one y value. You can see here that the x values have two y values, so it is not a function.
