with the center at the origin and the height 12 units in the width 14 units
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The general equation is:
x^2/a + y^2/b = 1
When y is zero x is plus or minus 7 so:
a = 49
Similarly y must be plus or minus 6 when x is zero so:
b = 36
This makes the equation:
x^2/49 + y^2/36 = 1
x^2/a + y^2/b = 1
When y is zero x is plus or minus 7 so:
a = 49
Similarly y must be plus or minus 6 when x is zero so:
b = 36
This makes the equation:
x^2/49 + y^2/36 = 1