Show how to multiply 6x298 using friendly numbers and then using properties and mental math. Write about which method you like better and why.(and free points w brain list)

How do you use the elimination method for this question? explain, because i really want to understand!

Identify the slope an intercept of the following linear equation y = 1/5x - 6 a. slope: 1/5; intercept: -6 b. slope: 5; intercept: -6 c. slope: -1/5; intercept: 6 d. slope: 1/5; intercept: 6

Based on the diagrams, what is the value of x?