Which of the following phrases are equations? 4.23
B
b=9
с
7 + 19 = 26
O
a +9> 72
8
2 + y -
3

Step-by-step explanation:

B) b = 9

C) 7 + 19 = 26

O) a + 9 > 72 <=> a > 63 <=> a = (64, 65, 66, ...)

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)

step-by-step explanation: