Question

Please answer Please answerPlease answerPlease answerPlease answerPlease answerPlease answerPlease answerPlease answerPlease answerPlease answer

Answer 1

D. y = 3x -1

Explanation:

y = mx + b

m is the slope. It is the change in y over the change in x. If you look at the table, you will see that the y is increasing by 3 and the x is increasing by 1.

3/1 =3. So the slope or m is 3

b is the y-intercept. This is where the line crosses the y axis. It is at the point (0,b). Looing at the table, when x is 0, y is -1. So, -1 is the b or the y-intercept.

y = mx + b substitute 3 for m and -1 for b.

y = 3x - 1

Answer 2

first take 2 points

m = y₂ - y₁ / X₂ - X₁

m = 5 - 2 / 2 - 1

m = 3

y - y₁ = m (x-x₁)

y - 2 = 3(x - 1)

y - 2 = 3x - 3

y = 3x - 3 + 2

y = 3x - 1

so the answer is D