Answer:
A. (-7 -2)
Step-by-step explanation:
You can eliminate y by multiplying the first equation by 7 and subtracting 6 times the second equation:
7(-3x +6y) -6(5x +7y) = 7(9) -6(-49)
-21x +42y -30x -42y = 63 +294 . . . . eliminate parentheses
-51x = 357 . . . . . . . . collect terms
x = -7 . . . . . . . divide by -51. This matches answer choice A.
y= -1x + 2
-4/4 is the same as saying -1. slope always has to be in the simplest form.
0.04
Hope this helps & good luck. :)
20.25
A
the word 'of' means to multiply
0.45 × 80 = 36
