Answer:
Step-by-step explanation:Example 1: Find the equation of the line passing through the points (–1, –2) and (2, 7).
Step 1: Find the slope of the line.
To find the slope of the line passing through these two points we need to use the slope
formula:
( )
( )
So the slope of the slope of the line passing through these two points is 3.
Step 2: Use the slope to find the y-intercept.
Now that we know the slope of the line is 3 we can plug the slope into the equation and
we get:
y = 3x + b
Next choose one of the two point to plug in for the values of x and y. It does not matter
which one of the two points you choose because you should get the same answer in either
case. I generally just choose the first point listed so I don’t have to worry about which
one I should choose.
(–1, –2) → –2 = 3(–1) + b Multiply to simplify the problem.
–2 = –3 + b Solve for b and you will have the y-intercept.
b = 1
Answer:
x=-2
Step-by-step explanation:
distribute on both sides
3x+6=4-2x
subtract 2x
5x+6=4
Subtract 6
5x=-10
divide 5 from the x
x=-2
Answer:
7/5
Step-by-step explanation:
it is 2/7 more than what it was (5/5)
Answer:
it is moved 7 to the left of the parent function
Step-by-step explanation:
