Can you please explain how 7.86×4.6=36.156
1 answer:
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Answer:
D. (2, 6)
Step-by-step explanation:
Look at the picture.
Check:
(2, 6) → x = 2, y = 6
Put the coordinates of the point to the inequalities:
y < x² + 6
6 < 2² + 6
6 < 4 + 6
6 < 10 TRUE
y > x² - 4
6 > 2² - 4
6 > 4 - 4
6 > 0 TRUE
Question:
Find the constant of proportionality k. Then write an equation for the relationship between x and y
Answer:
(a)
(b)
Step-by-step explanation:
Given
Solving (a): The constant of proportionality:
Pick any two corresponding x and y values
The constant of proportionality k is:
Solving (b): The equation
In (a), we have:
k can also be expressed as:
Substitute values for x1, y1 and k
Cross multiply:
Open bracket
Add 10 to both sides