Answer:
y = 4x - 6
Explanation:
linear equation:
y = mx + b
1. find the slope m
first select two point
im gonna take point 1 (-1,-7) and point 2 (3,9)
m = (y2-y1)/(x2-x1)
m = (9-(-7))/(3-(-1)) = 16/4 = 4
2. find b
first select a point
im gonna reuse point 2 (3,9)
y = mx + b
9 = 5(3) + b
9 = 15 + b
b = 9 - 15 = -6
3. keep x y, substitute m,b to linear equation
y = 4x - 6