Classify the following system of equations.

8x - 12y = -9

18x + 27y = 21

The following system of equations 8x - 12y = -9   and 18x + 27y = 21 are intersecting lines

Solution:

Given, system of equations are 8x – 12y = - 9 ⇒ (1)

And 18x + 27y = 21 ⇒ 6x + 9y = 7 ⇒ (2)

We have to classify the above given system of equations  

For the we have to find the solution for the given system of equations

So, now, multiply (1) with 9 and (2) with 12, such that both equations will have same coefficients for y terms, such that, it will be easier to find solution while calculations by cancelling.

72x – 108y = - 81

72x + 108y = 84

(+) ---------------------------

144x + 0y = 3

144x = 3

Substitute "x" value in (2)

So, given system of equations has 1 solution which means that, they are intersecting lines.

Hence, the given system of equations are classified as intersecting lines

14.3

step-by-step explanation:

add all the numbers together.

9 + 12 + 15 + 16 + 17 + 17 = 86

now, divide 86 by how many numbers we have: 6.

86 / 6 = 14.3