Simplify using the distributive property. 9 × 81

The distributive property: a(b + c) = ab + ac

9 × 81 = 9 × (80 + 1) = (9)(80) + (9)(1) = 720 + 9 = 729

i used to know how to do this in 7th but i forget easily

step-by-step explanation:

y = 3x+4

step-by-step explanation:

to find the slope

slope = (y2-y1)/ (x2-x1)

    = (-8-4)/ (-4-0)

    = -12/-4

  = 3

using the slope intercept form of a line

y= mx+b

we know the slope is 3

we know the y intercept is 4 ( the point where it crosses the y axis or x=0)

y = 3x+4