Question

If the coordinates of point A are (8, 0) and the coordinates of point B are (3, 7), the y-intercept of is . If the coordinates of point D are (5, 5), the equation of line is y = x + . NextReset

Answer 1

y=mx+b, m=(0-7)/(8-3)=-7/5

y=-7x/5 +b, using point (8,0)

0=-56/5 +b, so b=56/5 or if you prefer 11.2

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If (5,5) is a point on the line y=x+b...

5=5+b, so b=0 and the line is just

y=x