The Pythagorean trigonometric identity is a trigonometric identity expressing the Pythagorean theorem in terms of trigonometric functions. Along with the sum-of-angles formulae, it is one of the basic relations between the sine and cosine functions.
14x-21y+42 should be your answer. hope it helps :)
Answer:
Slope = 1/9
Step-by-step explanation:
Use the formula for the slope of a line given two points. I've attached a photo to remind you what the formula is.
m is the slope of the line.
(x1, y1) = (-4, 4) and (x2, y2) = (5, 5)
So plug in the numbers into the formula, which yields:
m = 
m = 