y2-y1 / x2-x1
7-3 / 4-1
4/3
1 & 1/3 should be correct
Answer:
40
Step-by-step explanation:
f(n) = 5 + (n - 1)(5)
f(n) = 5 + 5n - 5
f(n) = 5n
n = 8
5(8) = 40
Step-by-step explanation:
4x^2-6x-40
2(2x^2-3x-20)
=2(2x+5)(x-4)
We need to put these equations into y=mx+b format.
5x-3y=-6
-3y=-5x-6. (take 5x from both sides)
y=5/3 x +2 ( divide both sides by -3)
The slope is 5/3
3x+5y=-20
5y= -3x -20 (subtract 3x from both sides)
y=-3/5x -4 (divide both sides by 5)
The slope is -3/5
The slopes of perpendicular lines are the opposite (+/-) reciprocal. We have 5/3 and -3/5. This shows they are perpendicular.
The correct answers are:
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[B]: " (3, -3) " ; AND:
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[C]: " (-2, -3) " .
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<u>
Note</u>: Any point with the "y-coordinate" of "-3" would also be on the line.
As such, the correct answers, are:
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[B]: " (3, -3) " ; AND:
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[C]: " (-2, -3) " .
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