Answer:
10
Step-by-step explanation:
10+3 = 13
13 x 7 = 91
The domain is (0,-5) and range is (0,-7) the y is the range and the x is the domain
the answer to the first part is 2x-3
By the Pythagorean theorem,

Answer:
k = 18
Step-by-step explanation:
Given that y varies inversely as x then the equation relating them is
y =
← k is the constant of variation
To find k use the condition y = 3 when x = 6, that is
3 =
( multiply both sides by 6 )
18 = k
The constant of variation is k = 18