Add -6 to both sides
square root x+6-6=7+-6
square root x=1
Solve square root
square root x=1
x= 1^2 ( square root both sides )
x=1
I hope that's help !
So this is our table:
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x-values | a b c d e f |
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y-values | g h i j k l |
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You can know that the values in the table are proportional if:

Hope that helps :)
The y values decrease as the x values increase. If you picture the points in your head, you’ll see that (2,2) is to the right and lower than (-3,5), creating a negative slope.
The height would be 17 meters because,
17x17=289