Question

Need help with a,b,c please

Answer 1

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Answer:

  a) y = 0 +3x

  b) 3; the line rises 3 units for each unit to the right

  c) (0, 0); the line crosses the y-axis at y=0

Step-by-step explanation:

a. The y-intercept is the point on the y-axis where the line crosses. That point is (0, 0). The y-coordinate there is the value of b in the equation.

The slope is the ratio ...

  m = rise/run

The points marked are separated by 3 units vertically for each 1 unit horizontally. Points on the right are above those on the left, so the "rise" is positive for a positive "run".

  m = 3/1 = 3

Then the equation is ...

  y = 0 + 3x

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b. The slope is 3. It is the ratio of rise to run.

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c. The y-intercept is 0. It is the y-coordinate of the point where the line crosses the y-axis.