7. HIKING The graph relates temperature y (in degrees Fahrenheit) to altitude x
(in thousands of feet).
a. Find the slope and y-intercept.
b. Write an equation of the line.
c. What is the temperature at sea level?

Hiking is another word for climbing

Abit confused about what you mean, but i think you might be referring to slope intercept form: y = mx + bin that case b, or the y intercept is already given.(0,-1)find the slope by using the formulay2 - y1/x2 - x1the final slope will be 4/2, equivalent to 2.now your equation should look like thisy = 4/2x -1sorry if this didn’t you out!