Question

Answers that need to be checked!
1.) Determine whether each ordered pair is a solution of the system of linear equations.
3y=9x+12
3x-y=-4
a. (-2,-2) b. (0,4)

MY ANSWER: I PUT YES

Answer 1

2.) Solve the system of equations by graphing.
x-y=4
y=-1
MY ANSWER: (1,-3) (0,-4)

Answer 2

Lines intersect @ (1, -3)

Answer 3

yep that's right but why did you put 0 , -4 for 2nd question ?

Answer 4

3.) Solve the system of equations by graphing.
y=-4x+2
3y+12x=6
Lines intersect @ (1, -2)

Answer 5

I have to find 2 points to plot it on the graph.

Answer 6

Solve the system of equations by substitution.
x=7y+6
-2x+14y=-12
I got infinitely many solutions.

Answer 7

last one when you solve 2nd equation for y you will get 1st equation
so i would write infinitely many solution

Answer 8

1)b
2) wrong
3)right
4)right

Answer 9

i mean 3rd question

Answer 10

I'm confused....

Answer 11

What do you mean?

Answer 12

Are you saying I solved for number 3 wrong then?

Answer 13

what's the statement for 3rd question ? they are asking 4 solution ?

Answer 14

For number 3, they are asking my to solve by graphing. Y HAS ALREADY been solved for.. Now I need to solve for the other equation. When solving for the other equation and plotting it on the graph, lines intersect at points (1, -2). Is the intersection point correct?

Answer 15

\(\color{blue}{\text{Originally Posted by}}\) @YanaSidlinskiy
3.) Solve the system of equations by graphing.
y=-4x+2
3y+12x=6
Lines intersect @ (1, -2)
\(\color{blue}{\text{End of Quote}}\)
for this one you will get same line
both equations are same so thats mean they are intersecting at every point

Answer 16

solve 2nd equation for y \[\huge\rm 3y+12x=6\]
subtract 12x both sides and then divide by 3

Answer 17

its called dependent system when 2 equations represent the same line (same slope ,same y-intercept )

Answer 18

This topic is on solving by the graphing method....

Answer 19

okay so when you graph both equation you will get same line
there isn't ONE point where they intersect
so answer would be infinitely many solution

Answer 20

1) right
2nd) you just need a point where both lines intersect ,not the y-intercept
4th) right

Answer 21

let me know if u r still confused :=)

Answer 22

Thanks! Glad you could help out a little!