anonymous
  • anonymous
which equation describes a line that is NOT parallel to the lines described by the other three equations? 1. 2x+7y=8 2. -6x-21y=-5 3.-10.5y=3x 4.y+8=(2/7)(x-7)
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
OH MY GAWD
anonymous
  • anonymous
the struggle!
mathstudent55
  • mathstudent55
Can you check the third equation?

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

anonymous
  • anonymous
Yup thats the exact one on my test. its -10.5y=3x
mathstudent55
  • mathstudent55
Ok. Solve each equation for y and write it in the form y = mx + b. m, the number that multiplies x, is the slope.
mathstudent55
  • mathstudent55
Let's try the first one: \(2x+7y=8\) Subtract 2x from both sides: \(7y = -2x + 8\) Divide both sides by 7: \(y = -\dfrac{2}{7} x + \dfrac{8}{7} \) The slope is \(-\dfrac{2}{7} \) Now do the same to all other equations and compare their slopes.
mathstudent55
  • mathstudent55
By "do the same to all other equations" I mean solve all other equations for y and put them in the y = mx + b form.
anonymous
  • anonymous
ok so 2x+7y=8 is y=-2x/7+8/7 -6x-21y=-5 is y=-2x/7+5/21 -10.5y=3x is y=-0.28571429x and y+8=2/7(x-7) is y=2x/7-10
anonymous
  • anonymous
1. slope is -2/7 2. slope is -2/7 3. slope is -0.28571429 4. slope is 2/7
anonymous
  • anonymous
so is it 3? @mathstudent55
mathstudent55
  • mathstudent55
\(-6x-21y=-5\) \(-21y = 6x - 5\) \(y = -\dfrac{6}{21}x + \dfrac{5}{21} \) \(y = -\dfrac{2}{7}x + \dfrac{5}{21} \) Correct.
anonymous
  • anonymous
Thankyou so much for your help!
mathstudent55
  • mathstudent55
\(-10.5y=3x\) \(y = - \dfrac{3}{10.5} x \) \(y = - \dfrac{6}{21} x \) \(y = - \dfrac{2}{7} x \) Incorrect.
mathstudent55
  • mathstudent55
You should keep the third one as a fraction. The you will see that the third one is also -2/7. The answer is D, 2/7
mathstudent55
  • mathstudent55
1. slope is -2/7 2. slope is -2/7 3. slope is -0.28571429 = -2/7 4. slope is 2/7 The only different slope is D.

Looking for something else?

Not the answer you are looking for? Search for more explanations.