Answer:
−9d+13
Step-by-step explanation:
3d+4−(6d−9)
Distribute the Negative Sign:
=−3d+4+−1(6d−9)
=−3d+4+−1(6d)+(−1)(−9)
=−3d+4+−6d+9
Combine Like Terms:
=−3d+4+−6d+9
=(−3d+−6d)+(4+9)
=−9d+13
Answer:
=−9d+13
Answer:
4x²+12x+9
Step-by-step explanation:
1. 2x times 2x = 4x²
2. 2x times 3 = 12x
3. 3 x 3 = 9 or 3² also equals 9
Probably the last option. Because it has the points shown on the coordinate graph.
Using the general equation formula;
y-y1=m(x-x1)
y1=20 and x1=4
Since the two lines are perpendicular, they have the same gradients
But gradient for y=4x+5 is 4
Therefore m of the equation is 4
Substituting all this into the general formula;
y-20=4(x-4)
y-20=4x-16
y=4x-16+20
y=4x+4
