Look at the picture.
We have the equation (1) 12x + 4y = 40.
We know, the sum of the acute angles in a right triangle is 90°.
Therefore we have the equation (2) (12x + 4y) + (17x - y) = 90
Substitute (1) to (2):
40 + 17x - y = 90 <em>subtract 40 from both sides</em>
17x - y = 50 (3)
We have the system of equations:
Substitute the value of x to (3)
Answer: x = 3 and y = 1.
Answer:
<u>Final equation: y = -7x -19 </u>
Step-by-step explanation:
You are looking for slope intercept correct?
Formula: y = mx + B
Y = y-value of point ( coordinates )
M = slope
X = x - value of point ( coordinates )
B = Y - intercept
Equation:
2 = -7(-3) + B
2 = 21 + B
-21 = -21 = B
------------------
-19 = B
Final equation: y = -7x -19
Unless if it asks you to plug back the numbers for anything else then you do that but this is how you get slope intercept.
Definitely slower! why?
because it is 4 laps around the track just to make 1 mile. he would have had to run 24 laps in an hour. it took him 13.5 to run just one. he would have run just a little over a mile in an hour. or a little over 1 mph
