Answer:
2 and 3 are correct, not sure if you plan on doing 1, in which case I'd help you
Answer:
y = 2x² + 16x + 11
Step-by-step explanation:
first foil (x + 4)² to get x² + 8x + 16
distribute 2 to get 2x² + 16x + 32
subtract 21 from 32
Answer:56
Step-by-step explanation:
50 - 23 + 29 = 56
Answer:
y = -
x - 5
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 ) = (- 6, - 3) and (x₂, y₂ ) = (6, - 7)
m =
=
= - 
Note the line crosses the y- axis at (0, - 5) ⇒ c = - 5
y = -
x - 5 ← equation of line
let y = x^2
4y^2 -21y + 20 = 0
solve for y
then substitute back in to get x