Help Soon As possible
1 answer:
You might be interested in
Answer:
b
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m = (y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) = (- 1, 2) and (x₂, y₂ ) = (3, 1)
m = = -
, thus
y = - x + c ← is the partial equation
To find c substitute either of the 2 points into the partial equation
Using (- 1, 2), then
2 = + c ⇒ c = 2 -
=
y = - x +
← in point- slope form
Multiply through by 4
4y = - x + 7 ( add x to both sides )
x + 4y = 7 → b
Answer:
Step-by-step explanation:
So we want to make x the subject of the formula:
First, distribute the left side:
Combine all the terms with x with it on one side. To do this, first subtract bx from both sides. The right side cancels:
Remove the -ab from the left. Add ab to both sides. The left side cancels:
Now, distribute out the x from the left side:
Divide both sides by (a-b). The left side cancels:
Therefore: