Juanita constructed a number line to test her brother’s understanding of opposites. She tested him on all points that were label
ed with letters. Her brother had trouble representing the opposite of point A.
Which represents the opposite of Point A?
-(-10)
-(-5)
0
-(10)
Which represents the opposite of Point A?
-(-10)
-(-5)
0
-(10)
2 answers:
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Pretend these are coordinates that you can use to find the slope of the line.
(10, 40) and (15, 60). Fit these into the slope formula to find the slope of the line you are looking for:
and the slope is 4. Now use one of the points and the slope of 4 to solve for b, the y-intercept:
40 = 4(10) + b so b = 0. The equation of the line then is y = 4x + 0 or just
y = 4x
(10, 40) and (15, 60). Fit these into the slope formula to find the slope of the line you are looking for:
40 = 4(10) + b so b = 0. The equation of the line then is y = 4x + 0 or just
y = 4x