Answer:
B
Step-by-step explanation:
Any inversely proportional equation is of the form y=k/x.
Answer : -89
Explanation: 10 times -7 is -70. -70 minus 19 is -89.
Answer:9.9
Step-by-step explanation:
Add up the scores and dividing the total by the number of scores.
Answer:
(- 1, 1 )
Step-by-step explanation:
Given the 2 equations
y = 3x + 4 → (1)
y = x + 2 → (2)
Substitute y = 3x + 4 into (2)
3x + 4 = x + 2 ( subtract x from both sides )
2x + 4 = 2 ( subtract 4 from both sides )
2x = - 2 ( divide both sides by 2 )
x = - 1
Substitute x = - 1 into either of the 2 equations and evaluate for y
Substituting x = - 1 into (2)
y = - 1 + 2 = 1
Solution is (- 1, 1 )
