![arielpraczko1](/avatars/38911.jpg)
arielpraczko1
21.12.2020 •
Mathematics
Lines a and b are parallel. Line a is described by the equation 3x - 7y = 21. Line b passes
through the point (-2,3).
Which equation represents line b?
Solved
Show answers
More tips
- C Computers and Internet How to easily and quickly disable Firebug in Gmail and Google Docs...
- G Goods and services How to sew a ribbon: Tips for beginners...
- F Food and Cooking How to Make Mayonnaise at Home? Secrets of Homemade Mayonnaise...
- C Computers and Internet Which Phone is Best for Internet Surfing?...
- F Food and Cooking Everything You Need to Know About Pasta...
- C Computers and Internet How to Choose a Monitor?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
- S Style and Beauty How to Make Your Lips Fuller? Ideas and Tips for Beautiful Lips...
- C Computers and Internet How to Learn to Type Fast?...
Answers on questions: Mathematics
- M Mathematics Pls help! Given the function f(x)=4x-3 and g(x)=x+2, find f(g(x))...
- M Mathematics What are the slope and y-intercept for the graph of y-7x = 107 A. slope: 7, -intercept: 10 C. slope: -7, y intercept: 10 B. slope: 7, -intercept: -10 D. slope: -7, y-intercept:...
- M Mathematics What is the amount (to the nearest cent) in account at the end of three years if interest rate is 2%...
- M Mathematics Melanie is saving for a new bike. She already has $75 in her savings account and she plans to save $20 each week until she can afford the bike....
- M Mathematics a hawk flying 5/12 of a meter above ground sees a mouse directly below. The mouse dives into a hole that is 4/9 of a meter deep. At the moment, how far aprat are the...
- M Mathematics Help plssssssssssssssssssssss...
- M Mathematics Please help me with this problem! (angle congruencies)...
- M Mathematics The parabola opens upward, has x=-4 as an Axis of Symmetry and contains the non-vertex points (-1,24) and (-8,45). Write the equation in vertex form for this parabola....
- M Mathematics Mark and his best friend found some money in an envelope. They split the money evenly, each getting $6. How much money did they find? Please explain how you got your...
- M Mathematics Vertex: (4, -8), Focus: (4, 4,- 33 4...
Ответ:
The equation 3x - 7y = -27 or 7y = 3x +27 represents line b
y = ³/₇x + ²⁷/₇ also represents line b using originally calculated fractions.
The attachment shows the graphs of the lines.
Step-by-step explanation:
I find it easier to work with equations in slope-intercept form, y = mx + b, so the equation 3x -7y = 21 becomes -7y = -3x + 21 then y = 3/7 x - 3
Substitute the values of the coordinate given (-2,3) for y and x in the equation and solve for b.
3 = 3/7(-2) + b
3 = -6/7 + b Add 6/7 to both sides
3 + 6/7 = b You can leave 3⁶/₇ as the slope or chamge toan improper fraction
²⁷/₇ = b
Rewrite the equation with the original slope and the calculated value of b
y = ³/₇x - ²⁷/₇
as both denominators are 7, the equation can be simplified to
7y = 3x +27 or to standard form
3x - 7y = -27
Ответ:
Step-by-step explanation:
It is solved
maybe you want the graph it? or make a table of the values?