Answer:
y = 5x - 8
Step-by-step explanation:
The linear equation in slope intercept form :
y = mx + c
m = slope ; c = intercept
m = Rise / Run = (y2 - y1) / (x2 - x 1)
Rise = (y2 - y1) = (12 - (-8)) = (12 + 8) = 20
Run = (x2 - x1) = (4 - 0) = 4
Slope, m = Rise / Run = 20 /4 = 5
Hence,
y = 5x + c
For the points ; y = 12 ; x = 4 ; we could obtain c
12 = 5(4) + c
12 = 20 + c
12 - 20 = c
-8 = c
The equation becomes :
y = 5x - 8
9514 1404 393
Answer:
50%
Step-by-step explanation:
After a reduction by 33 1/3%, the price is 66 2/3% = 2/3 of its original value. To bring it back to 1 times the original value, it must be multiplied by the reciprocal of 2/3, that is, it must be multiplied by 3/2 = 1.50 = 1 +50%.
The price must be increased by 50% to bring it back up to $540.
Answer:
-14
Step-by-step explanation:
Without more information, I think the farthest you can go with that is 51t+9
This question belongs to simple algebric equation, where we need to add or subtract fractions by finding a common denominator.
Given total hours = 120
Number of hours tutored for 1st week =2 1/3 hours = 7/3 hours
Number of hours in the 2nd week = 3/2 = 1.5 hours
Let the number of more hours she needs to teach be x
=
23 + 6x = 120
6x = 97
x = 16.167
Hence Kiara needs 16.167 more hours.
And this belongs to a part-whole problem, because the time she still needs to tutor is unknown.