Question

which equation is represented by the table?
x y (x, y)
0 –1 (0, –1)
1 4 (1, 4)
2 9 (2, 9)

a.
y = x – 1

b.
y = –2x 3

c.
y = 5x – 1

d.
y = –4x 3

Answer 1

(0,-1)(1,4)
slope = (4 - (-1) / (1 - 0) = (4 + 1)/1 = 5

y = mx + b
slope(m) = 5
(1,4)...x = 1 and y = 4
now we sub
4 = 5(1) + b
4 = 5 + b
4 - 5 = b
-1 = b

equation is : y = 5x - 1...answer C