1.

If the points (h, o), (a, b) and (o, k) lie on a line, then?

A. <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>a</center></td><td rowspan="2"> + </td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>b</center></td><td rowspan="2"> = 1</td></tr><tr><td style="text-align: center;">h</td><td style="text-align: center;">k</td></tr></table>
B. <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>a</center></td><td rowspan="2"> + </td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>b</center></td><td rowspan="2"> = 1</td></tr><tr><td style="text-align: center;">k</td><td style="text-align: center;">h</td></tr></table>
C. <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>h</center></td><td rowspan="2"> + </td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>k</center></td><td rowspan="2"> = 1</td></tr><tr><td style="text-align: center;">a</td><td style="text-align: center;">b</td></tr></table>
D. <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>a</center></td><td rowspan="2"> - </td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>b</center></td><td rowspan="2"> = 1</td></tr><tr><td style="text-align: center;">h</td><td style="text-align: center;">k</td></tr></table>
Answer» B. <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>a</center></td><td rowspan="2"> + </td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>b</center></td><td rowspan="2"> = 1</td></tr><tr><td style="text-align: center;">k</td><td style="text-align: center;">h</td></tr></table>


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