On a map, New York and California are 19 cm apart. The map scale is 1 cm = 100 km. What is the actual distance between the two cities?

1900 km.

Step-by-step explanation:

On the map, 1 cm represents 100 km and there are 19 cm. So multiply 19 by 100.

100 * 19 = 1900

$8

step-by-step explanation:

it is pretty much backwards.

you take the 4x2 multiply that, and that is = $8

c. y = 1/4 x + 5

step-by-step explanation:

first, put the equation of the line on the graph into slope-intercept form

(y = mx + b):   y = -4x + 8

second, a perpendicular line has to have "an opposite/reciprocal slope" to the original slope. so, find the "m" value in your original equation (it's -4, right? )

original slope: m = -4   perpendicular slope: change the sign to its opposite and find the reciprocal ("flip" the number)

new slope is now positive (b/c the original slope was negative 4), and it's 1/4 (not the original slope of 4 or 4/1)