Step-by-step explanation:
it should be letter A on edge2020
Answer:
y=4/3x+1
Step-by-step explanation:
So basically you have to do the same thing you would do without the perpendicular part. Then just filp the 3/4x to 4/3 and solve for b.
Hope this helps :)
Answer:
a) y = 2 x - 1
b) y = - x + 7
c) y = 7 x + 2
Step-by-step explanation:
Use a pair of (x1, y1) and (x2, y2) points to find the equation of the line for each tables:
a) (5, 9) and (10, 19)
slope: (y2 - y1) / (x2 - x1) = (19 - 9) / (10 - 5) = 10 / 5 = 2
Then y = 2 x + b
solve for b in: 9 = 2 (5) + b
b = 9 - 10 = -1
Then y = 2 x - 1
b) (2, 5) and (5, 2)
slope: (y2 - y1) / (x2 - x1) = (2 - 5) / (5 - 2) = -3 / 3 = -1
Then y = - x + b
solve for b in: 5 = - (2) + b
b = 5 + 2 = 7
Then y = - x + 7
c) (3, 23) and (6, 44)
slope: (y2 - y1) / (x2 - x1) = (44 - 23) / (6 - 3) = 21 / 3 = 7
Then y = 7 x + b
solve for b in: 23 = 7 (3) + b
b = 23 - 21 = 2
Then y = 7 x + 2
<h3>
Answer: $70</h3>
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Explanation:
- x = number of days that elapsed
- y = bank balance in dollars
His bank balance is represented by the linear equation y = -20x+150.
The slope -20 means the balance goes down by 20 dollars each day. The y intercept 150 is the starting balance.
Plug in x = 4 to find the balance after four days
y = -20x+150
y = -20*4+150
y = -80+150
y = 70
His balance is $70 after four days. The -80 in the third step indicates the balance had gone down by $80.
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Another way to see why the answer is $70 is to write it out like this
day 0 = $150
day 1 = 150-20 = $130
day 2 = 130-20 = $110
day 3 = 110-20 = $90
day 4 = 90-20 = $70
