A line that is tangent to each of the two coplanar circles
Answer:
The discriminant is −4, so the equation has no real solutions.
Step-by-step explanation:
In the equation 0 = x² - 4x + 5, a is 1, b is -4, and c is 5.
Plug in these values into b² - 4ac, and simplify:
b² - 4ac
(-4)² - 4(1)(5)
16 - 20
= -4
So, the discriminant is -4. This means that the equation has no real solutions, because the discriminant is a negative number.
The correct answer is that The discriminant is −4, so the equation has no real solutions.
The length of a'b' is the same as ab because it is the same image so it is 3 units
Answer:
Slope is -8
Step-by-step explanation:
First and foremost, welcome to Brainly!
I'll begin with the basics of slope, just to help you get the gist of this crucial concept -
Slope can be rewritten as rise/run, although written formally as :

when we are given two coordinates (x,y) on the line.
One important thing to note is that slope belongs to a general equation,
y = mx+b
where b represents the y intercept and m is slope.
We're given two coordinates in your question: (6,9) and (7,1):

m = -8 is the final answer.
I hope this helps! By the way, slope is a concept that will follow you to calculus and physics, so I urge you to practice!