Question Progress Homework PIOS
8/23 Marks
a) Find the value of 3x - 2 when x = 4
b) Find the value of 5x + 6 when x = -2

3x-2=10

5x+6=-4

Step-by-step explanation:

hope it helpef

substitution

Step-by-step explanation:

a)3(4)-2

12-2=10

b)5(-2)+6

-10+6= -4

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)