Which of the following best describes the technique used to graph the equation, y = -2x + 8, using slope and y-intercept?
A. Mark a point at 8 on the y-axis, move upward 2 and right 1, mark the point and draw the line.
B. Mark a point at 8 on the y-axis, move downward 2 and right 1, mark the point and draw the line.
C. Mark a point at -2 on the y-axis, move upward 8 and right 1, mark the point and draw the line.
D. Mark a point at -2 on the y-axis, move downward 8 and right 1, mark the point and draw the line.

Question

Which of the following best describes the technique used to graph the equation, y = -2x + 8, using slope and y-intercept?
	A.	Mark a point at 8 on the y-axis, move upward 2 and right 1, mark the point and draw the line.
	B.	Mark a point at 8 on the y-axis, move downward 2 and right 1, mark the point and draw the line.
	C.	Mark a point at -2 on the y-axis, move upward 8 and right 1, mark the point and draw the line.
	D.	Mark a point at -2 on the y-axis, move downward 8 and right 1, mark the point and draw the line.

anonymous · Answer

a

anonymous · Answer

rise over run

anonymous · Answer

Which ones as you to mark the correct y-intercept? You can eliminate the other options. Then, try moving as described in the remaining answers, and plug in those numbers for x and y. Does the equation work?

anonymous · Answer

and 8 is the y intercepts that's why you go up 8