Robert L. answered 06/07/19
Experienced Calculus Instructor for Honors, AP or College Calculus
If h(-5) = -4 and h(-9) = -3, this describes two points in the x-y plane. (-5,-4) and (-9,-3)
Determine the slope of the line from these two coordinates y2-y1 / x2-x1
(-3 - (-4)) / (-9 - (-5)) = 1 / -4 = -1/4 slope
use point-slope method to determine equation of the line y - y1 = m(x-x1)
y - (-4) = (-1/4)(x - (-5))
y + 4 = (-1/4)(x + 5) ANSWER IN POINT-SLOPE FORM
alternate forms: y = (-1/4) x - (21/4) IS SLOPE-INTERCEPT FORM
x + 4y = -21 IS STANDARD FORM