At what point does the graph of y= 9^x cross the y-axis

(0,1)

Step-by-step explanation:

It that graph cross the y-axis, x haves to be 0. If you pass a wall (y), you have to be alingned to go throught (x=0). Then you replace:

x=0 ; y=1

175

step-by-step explanation:

2 inches x 10 miles = 200 miles - 3 inches = 175

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)