The midline is a horizontal axis that is used as the reference line about which the graph of a periodic function oscillates.
More About MidlineThe equation of the midline of periodic function is the average of the maximum and minimum values of the functionExamples of Midline<span>Figure-1 shows y = sin x and Figure-2 shows y = sin x + 1. The second curve is the first curve shifted vertically up by one unit.
The midline of y = sin x is the x-axis and the midline of y = sin x + 1 is the line y = 1.</span>
Go up 7 on the coordinate plane (up 7 on the y-axis). Go left 2 on the x-axis. Draw a dot where -2 and 7 meet. That is the point. Assuming you have a grid go up 4 and 1 to the right. Draw a point. Then go back to the first point (-2,7). Go down 4 and 1 to the left. Repeat this as many times as you want. Connect the points and draw the line.
Answer:QR,RST
Step-by-step explanation: