TAn elevator starts at the ground floor and makes 4 stops. The positive numbers stand for going up, and the negative numbers sta
2 answers:
You might be interested in
Answer:
x=25
Step-by-step explanation:
we know that "x" is Peter's age
assume that "y" is Phil's age
In the sentence "Phil's age is 7 years more than 1/5 times than Peter's age" are two things: "Phil's age": y and "1/5 times Peter's age": 1/5 x
create equation with these two things
y = 1/5 x
including "7 years more"
many people make a lot of errors with it, they dont know: y+7 = 1/5 x or y=1/5 x + 7 ?
in order to avoid mistakes
read the sentence and point, which: y or 1/5 x is greater and smaller
"Phil's age is 7 years more than ..."
so y is greater, and 1/5 x smaller
y = 1/5 x
greater = smaller
we must add 7 to smaller number to make an equality
greater = smaller + 7
y = 1/5 x + 7
Second sentence:
"4 times Phil's age is 2 years less than twice Peter's age."
Two things: "4 times Phil's age": 4y and "twice Peter's age": 2x
4y = 2x
read the sentence once again
"4 times Phil's age is 2 years less than (...)" , so 4y - smaller, 2x - greater
4y = 2x
smaller = greater
including "2 years less" we add 2 to a smaller number
smaller + 2 = greater
4y + 2 = 2x
Substitute y=1/5 x + 7 to the equation 4y+2 = 2x
Answer:
<h3>C. The slope is 5/7, and the y-intercept is 1.</h3>Step-by-step explanation:
You must solve the slope-intercept form with the graph of the linear function g passing through the points.
Use the slope-intercept form.
- M= slope
- B= y-intercept.
Use the slope formula.
(-7,-4) and (7,6)
- y2=6
- y1=(-4)
- x2=7
- x1=(-7)
Solve.
- <u>Therefore, the slope is 5/7 and y-intercept is 1.</u>
- <u>The correct answer is C. "The slope is 5/7, and the y-intercept is 1."</u>
I hope this helps. Let me know if you have any questions.