Solve the following:a) 3x = 18b) 2x = 9c) $ = 7d) Ž = 6.5
1 answer:
You might be interested in
Answer:
Step-by-step explanation:
In order to write the equation of the line in point-slope form that goes through those points, we need to know the slope of that line. Therefore,
So the slope is 2. Now we'll pick a point and use it to write an equation in point-slope form. I'll use the first point given to see if that's the one used in any of the answers : (10, 5)
y - 5 = 2(x - 10). That's choice B. Let's see, just in case there are 2 answers to this, what the equation would be using the other point (4, -7):
y - (-7) = 2(x - 4) and simplified:
y + 7 = 2(x - 4) is the other equation. Since that's not a choice, the only answer is B
Since the given line
has slope
The equation of the line perpendicular to it must have a slope which is the negative reciprocal of ,
The slope of the perpendicular line
Using the slope intercept form,
We substitute
This implies that,
Since
lies on this line , it must satisfy its equation.
That is
This implies that
The line therefore has equation,
has slope
The equation of the line perpendicular to it must have a slope which is the negative reciprocal of ,
The slope of the perpendicular line
Using the slope intercept form,
We substitute
This implies that,
Since
lies on this line , it must satisfy its equation.
That is
This implies that
The line therefore has equation,