How did you know that the values of the variables really satisfy the equation?

To know if the value that we have satisfies the given equation, we have to do the checking. To check, we have to substitute the value that we get to the variable and solve the equation. Example: ... Therefore, we can conclude that 25 is the correct value of x, and it satisfies the equation.

Step-by-step explanation:

it’s supposed to be -4+45=41

step-by-step explanation:

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)