Question 6
Which is the graph of y=x-3?
=
X-
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Answer: Graph A
Step-by-step explanation:
When b= -3, it means the line will pass through y (vertical) at -3. Therefore, it cannot be graph b.
Why it is graph A:
Think rise-over-run. The line will increase in height by 3, and in width by 4 every intersection. If you pick 2 spots, you can count up 3 and across 4.
(y2-y1)/(x2-x1)
(-3-0)/(0-4)
(-3)/(-4) --> when dividing by 2 negatives, they become positve.
3/4
y = 3/4-3