Answer:
2 is correct answer
Step-by-step explanation:

hope it helped you:)
8x-9y=19
4x+y=-7
Multiply all terms of the 2nd by (9)===> 36x + 9y= 63
add (36x 9y= 63) to the 1st ===> 44x+0y = -44 ===> x=-1
replace x by this value in any of the equation & you'll get y=-3
Answer:
4989600
Step-by-step explanation:
The given word is MATHEMATICS
Number of letters in the given word is 11
there are 2 M's, 2 A's and 2 T's
the given word is arranged in 11! ways
three letters are repeating, so we divide by repeating occurrences
number of different arrangements =
= 4989600
The slope of a horizontal line is always 0 as slope is rise over run . In the graph if you take any two points the y value is always 4 (1,4) and (2,4)
slope is 4-4/2-1=0/1 =0