7( -4) + 2(2) -8(1.5)/2
= -28 + 4 - 12/2
= -28 + 4 -6
=-24-6
= -30
Your answer is -30.
Answer:
y = -1/2x^2 -5x -45/2
Step-by-step explanation:
Multiply it out and collect terms.
y = -1/2(x^2 +10x +25) -10 . . . . . expand the square
y = -1/2x^2 -5x -25/2 -20/2 . . . eliminate parentheses
y = -1/2x^2 -5x -45/2 . . . . . . . . collect terms
We need to know this:
If Δ > 0 we have two and different solutions
If Δ = 0 we just one solution
If Δ < 0 we don't have real solutions
Each coordinate is plotted in the graph below. The shape is a quadrilateral and has a pair of parallel lines. The shape is a trapezoid.
Answer:

Step-by-step explanation:
3u=y/x^2-d^2
3u=y-(xd)^2/x^2
u=y-(xd)^2/3x^2