Answer:
Step-by-step explanation:
The formula:
Substitute:
Answer:
(38,9)
Step-by-step explanation:
Answer:
B. y = -x + 2
Step-by-step explanation:
Now, the standard slope formula is y = mx + b, where m is the slope and b is the y intersect. From the graph pictured, we know that it has a slope of 1 since it goes up one point and to the right one point. So, I know the equation of this line is y = x + 2. Now, all that is left is to find this equation with a -x, which indicates that it is a -1 slope. Since option B has the formula y = -x + 2, that is the correct answer.
Y=40 miles
work shown in the picture
a) The function that represent this situation is y = 90 + 8x.
b) His weight be after 8 weeks is 154 lbs.
<u>Step-by-step explanation:</u>
It is given that,
- He started at 90 kilograms.
- And gained weight at a constant rate of 8 lbs a week.
a) Write a function to represent this situation. Use x and y as your variables.
- Let 'x' be the number of weeks he gained weight.
- Let 'y' be the total weight.
Hence the equation can be framed as,
Total weight = starting weight + weight gained in x weeks.
We know that, each week he gains 8 lbs. Therefore, for 8 weeks he gained 8x lbs of weight.
⇒ y = 90 + 8x.
∴ The function that represent this situation is y = 90 + 8x.
b) What would his weight be after 8 weeks?
To find his week after 8 weeks, substitute x=8 in the function y = 90 + 8x.
⇒ 90 + 8(8)
⇒ 90 + 64
⇒ 154 lbs.
∴ His weight be after 8 weeks is 154 lbs.