Answer:
8.
Denote the equation : y = ax + b
Use the first 2 values of x and y in table:
3a + b = 21
5a + b = 35
Subtract the 2 equations:
=> 2a = 14 => a = 7 => b = 21 - 3 x 7 = 0
=> The solution is y = 7x
9.
Denote the equation : y = ax + b
Use the first 2 values of x and y in table:
5a + b = 17
10a + b = 22
Subtract the 2 equations:
=> 5a = 5 => a = 1 => b = 17 - 5 x 1 = 17 - 5 = 12
=> The solution is y = x + 12
Hope this helps!
:)
Answer:
Step-by-step explanation:
The graph passes through (3, -1) and (0, -4)
<u>The slope is:</u>
- (-4 - (-1))/-3 = -3/-3 = 1
<u>The y-intercept is given</u>: -4
<u>The line is:</u>
See the graph
<u>The points plotted as well and those on the line are:</u>
Answer: The answer would be 6.750
Step-by-step explanation: