Question:
Which of the following is the correct sequence of steps in the four-stroke engine cycle?
Answer:
D. <em><u>Air</u></em><em><u> </u></em><em><u>and</u></em><em><u> </u></em><em><u>fuel</u></em><em><u> </u></em><em><u>intake</u></em><em><u>,</u></em><em><u> </u></em><em><u>compression</u></em><em><u> </u></em><em><u>and</u></em><em><u> </u></em><em><u>ignition</u></em><em><u>,</u></em><em><u> </u></em><em><u>combustion</u></em><em><u> </u></em><em><u>and</u></em><em><u> </u></em><em><u>expansion</u></em><em><u>,</u></em><em><u> </u></em><em><u>exhaust</u></em><em><u> </u></em>
Answer choice c is the correct choice
C.
1,0,-2
you solve by substitution
x=1
y=0
z= -2