What is the distance between (7, 13) and (1, 5)?

What is the midpoint between and ?

What is the slope of this line?

Refer to the above diagram. If the red line passes through the point , what is the value of ?

Refer to the above red line. A line is drawn perpendicular to that line, and with the same -intercept. Give the equation of that line in slope-intercept form.

What is the amplitude of the function if the marks on the y-axis are 1 and -1, respectively?

If the graph has an equation of , what is the value of ?

The equation represents a line. This line does NOT pass through which of the four quadrants?