Write an equation for the sentence. Four times a number less 10 is equal to 16 ?
2 answers:
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Take the augmented matrix,
Swap the row 1 and row 2:
Add -2(row 1) to row 2, and -1(row 1) to row 3:
Add -1(row 2) to row 3:
Multiply through row 3 by 1/9:
Add 5(row 3) to row 2:
Multiply through row 2 by -1/3:
Add -2(row 2) and -1(row 3) to row 1:
So we have .
It's a linear function with a slope 0.
It's a horizontal line (look at the picture).
