Azizah got 1 for the slope of the line through 2 points (1,2) and (4,-1). Explain to her the mistake she made and how to find th e slope correctly
2 answers:
Answer:
slope = -1
Step-by-step explanation:
Azizah got 1 for the slope of the line through 2 points (1,2) and (4,-1).
To find out slope apply slope formula
(1,2) is x1,y1
(4,-1) is x2,y2
So the slope is -1 not 1
She made a mistake in the negative sign
-1-2 is -3. negative by positive is negative
(1,2)(4,-1) slope = (y2 - y1) / (x2 - x1) slope = (-1 - 2) / (4 - 1) = -3/3 = -1 the slope is -1......I am not sure of the mistake.....unless she just added (-1 - 2) and got 3 instead of -3.......or when dividing -3/3....she maybe forgot about the negative sign
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