The slope of the rise over run.
Answer:
-23b + 4
Step-by-step explanation:
Add the like terms. those would be: -2b - 5b -4b2 notice they all have a b in it. Its like having x amount of bananas and 4 apples, they arent the same, so you cant add those together. Use our handy dandy tiger algebra website and we get -23b. We still have the 4, so, -23b + 4. Thats your answer.
To find a perpendicular line you first need to see the equation in slope intercept form. To do that you need to solve for y.
2x - 5y = 20 ---> subtract 2x from both sides
-5y = -2x + 20 ---> divide by -5
y = 2/5x - 4
Now that you have this, note that a perpendicular line has opposite and reciprocal slope. Since the slope in our equation is 2/5, that means the new line will have -5/2 slope. So we use the point given and the slope to find the y intercept.
y = mx + b
-8 = -5/2(7) + b ---> multiply
-8 = -35/2 + b ---> add 35/2 to both sides
19/2 = b
Now use our new slope and new y intercept to write the new equation.
y = -5/2x + 19/2
Answer:
4,210,931
Step-by-step explanation: